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131252010531 = 3734783125303
BaseRepresentation
bin111101000111100111…
…0101011111000100011
3110112210011210222012020
41322033032223320203
54122301003314111
6140144002032523
712324355452555
oct1721716537043
9415704728166
10131252010531
115073337a184
1221530048743
13c4b93a9575
1464d18974d5
153632c24906
hex1e8f3abe23

131252010531 has 16 divisors (see below), whose sum is σ = 177438483456. Its totient is φ = 86283959616.

The previous prime is 131252010529. The next prime is 131252010559. The reversal of 131252010531 is 135010252131.

It is not a de Polignac number, because 131252010531 - 21 = 131252010529 is a prime.

It is a super-2 number, since 2×1312520105312 (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131252010031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 984826 + ... + 1110128.

It is an arithmetic number, because the mean of its divisors is an integer number (11089905216).

Almost surely, 2131252010531 is an apocalyptic number.

131252010531 is a deficient number, since it is larger than the sum of its proper divisors (46186472925).

131252010531 is a wasteful number, since it uses less digits than its factorization.

131252010531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130162.

The product of its (nonzero) digits is 900, while the sum is 24.

Adding to 131252010531 its reverse (135010252131), we get a palindrome (266262262662).

The spelling of 131252010531 in words is "one hundred thirty-one billion, two hundred fifty-two million, ten thousand, five hundred thirty-one".

Divisors: 1 3 73 219 4783 14349 125303 349159 375909 1047477 9147119 27441357 599324249 1797972747 43750670177 131252010531