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131213010143020 = 225134900910297403
BaseRepresentation
bin11101110101011001101000…
…110111000000011100101100
3122012120211201021121010211011
4131311121220313000130230
5114144243221044034040
61143022231423035004
736431553465615601
oct3565315067003454
9565524637533734
10131213010143020
1138899141567333
1212871b6373ba64
13582a445383570
142458a5a5326a8
15102824153b3ea
hex775668dc072c

131213010143020 has 48 divisors (see below), whose sum is σ = 296749352783520. Its totient is φ = 48446887412736.

The previous prime is 131213010142999. The next prime is 131213010143057. The reversal of 131213010143020 is 20341010312131.

It is a junction number, because it is equal to n+sod(n) for n = 131213010142982 and 131213010143000.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7593639 + ... + 17891041.

It is an arithmetic number, because the mean of its divisors is an integer number (6182278182990).

Almost surely, 2131213010143020 is an apocalyptic number.

131213010143020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131213010143020 is an abundant number, since it is smaller than the sum of its proper divisors (165536342640500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131213010143020 is a wasteful number, since it uses less digits than its factorization.

131213010143020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10346434 (or 10346432 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 131213010143020 its reverse (20341010312131), we get a palindrome (151554020455151).

The spelling of 131213010143020 in words is "one hundred thirty-one trillion, two hundred thirteen billion, ten million, one hundred forty-three thousand, twenty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 49009 98018 196036 245045 490090 637117 980180 1274234 2548468 3185585 6371170 10297403 12742340 20594806 41189612 51487015 102974030 133866239 205948060 267732478 535464956 669331195 1338662390 2677324780 504665423627 1009330847254 2018661694508 2523327118135 5046654236270 6560650507151 10093308472540 13121301014302 26242602028604 32803252535755 65606505071510 131213010143020