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131303130032020 = 22539563165941827
BaseRepresentation
bin11101110110101101100100…
…011011000110011110010100
3122012220110022220001211201211
4131312231210123012132110
5114202232302242011040
61143131454125031204
736441223652212012
oct3566554433063624
9565813286054654
10131303130032020
1138923387923841
12128875146b5504
135835aa7c9107b
14245d16931b8b2
15102a76819a8ea
hex776b646c6794

131303130032020 has 24 divisors (see below), whose sum is σ = 275743544285664. Its totient is φ = 52519924161696.

The previous prime is 131303130032003. The next prime is 131303130032051. The reversal of 131303130032020 is 20230031303131.

It is a junction number, because it is equal to n+sod(n) for n = 131303130031982 and 131303130032000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82179654 + ... + 83762173.

It is an arithmetic number, because the mean of its divisors is an integer number (11489314345236).

Almost surely, 2131303130032020 is an apocalyptic number.

131303130032020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131303130032020 is an abundant number, since it is smaller than the sum of its proper divisors (144440414253644).

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

131303130032020 is a wasteful number, since it uses less digits than its factorization.

131303130032020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165981399 (or 165981397 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 131303130032020 its reverse (20230031303131), we get a palindrome (151533161335151).

The spelling of 131303130032020 in words is "one hundred thirty-one trillion, three hundred three billion, one hundred thirty million, thirty-two thousand, twenty".

Divisors: 1 2 4 5 10 20 39563 79126 158252 197815 395630 791260 165941827 331883654 663767308 829709135 1659418270 3318836540 6565156501601 13130313003202 26260626006404 32825782508005 65651565016010 131303130032020