131021012032 has 28 divisors (see below), whose sum is σ = 263556403036. Its totient is φ = 64613099520.

The previous prime is 131021012027. The next prime is 131021012033. The reversal of 131021012032 is 230210120131.

It can be written as a sum of positive squares in 2 ways, for example, as 97259154496 + 33761857536 = 311864^2 + 183744^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 131021011997 and 131021012015.

It is not an unprimeable number, because it can be changed into a prime (131021012033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14017269 + ... + 14026612.

Almost surely, 2^131021012032 is an apocalyptic number.

It is an amenable number.

131021012032 is an abundant number, since it is smaller than the sum of its proper divisors (132535391004).

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

131021012032 is an equidigital number, since it uses as much as digits as its factorization.

131021012032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28043966 (or 28043956 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 131021012032 its reverse (230210120131), we get a palindrome (361231132163).

The spelling of 131021012032 in words is "one hundred thirty-one billion, twenty-one million, twelve thousand, thirty-two".