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131213030120 = 2353280325753
BaseRepresentation
bin111101000110011100…
…1111111001011101000
3110112200110110120010022
41322030321333023220
54122211013430440
6140140050340012
712323403232214
oct1721471771350
9415613416108
10131213030120
1150713375667
122151ab8a608
13c4b12abb33
1464ca62b944
15362e5c4cb5
hex1e8ce7f2e8

131213030120 has 16 divisors (see below), whose sum is σ = 295229317860. Its totient is φ = 52485212032.

The previous prime is 131213030093. The next prime is 131213030161. The reversal of 131213030120 is 21030312131.

It can be written as a sum of positive squares in 2 ways, for example, as 118486031524 + 12726998596 = 344218^2 + 112814^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1640162837 + ... + 1640162916.

Almost surely, 2131213030120 is an apocalyptic number.

131213030120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131213030120 is an abundant number, since it is smaller than the sum of its proper divisors (164016287740).

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

131213030120 is a wasteful number, since it uses less digits than its factorization.

131213030120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3280325764 (or 3280325760 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 131213030120 its reverse (21030312131), we get a palindrome (152243342251).

The spelling of 131213030120 in words is "one hundred thirty-one billion, two hundred thirteen million, thirty thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 3280325753 6560651506 13121303012 16401628765 26242606024 32803257530 65606515060 131213030120