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131202020120 = 23519172634237
BaseRepresentation
bin111101000110000111…
…1111111001100011000
3110112122200202012020112
41322030033333030120
54122200204120440
6140135014343452
712323210525123
oct1721417771430
9415580665215
10131202020120
1150708135696
122151735ab88
13c4abc25642
1464c8da33ba
15362d64c965
hex1e8c3ff318

131202020120 has 32 divisors (see below), whose sum is σ = 310741628400. Its totient is φ = 49718659968.

The previous prime is 131202020093. The next prime is 131202020263. The reversal of 131202020120 is 21020202131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 131202020095 and 131202020104.

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, 86316359 + ... + 86317878.

Almost surely, 2131202020120 is an apocalyptic number.

131202020120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131202020120 is an abundant number, since it is smaller than the sum of its proper divisors (179539608280).

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

131202020120 is a wasteful number, since it uses less digits than its factorization.

131202020120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172634267 (or 172634263 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 131202020120 its reverse (21020202131), we get a palindrome (152222222251).

The spelling of 131202020120 in words is "one hundred thirty-one billion, two hundred two million, twenty thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 19 20 38 40 76 95 152 190 380 760 172634237 345268474 690536948 863171185 1381073896 1726342370 3280050503 3452684740 6560101006 6905369480 13120202012 16400252515 26240404024 32800505030 65601010060 131202020120