131320020032 has 28 divisors (see below), whose sum is σ = 264157875036. Its totient is φ = 64760555520.

The previous prime is 131320020017. The next prime is 131320020043. The reversal of 131320020032 is 230020023131.

It can be written as a sum of positive squares in 2 ways, for example, as 63169784896 + 68150235136 = 251336^2 + 261056^2 .

It is a super-2 number, since 2×131320020032² (a number of 23 digits) contains 22 as substring.

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, 14049269 + ... + 14058612.

Almost surely, 2^131320020032 is an apocalyptic number.

It is an amenable number.

131320020032 is an abundant number, since it is smaller than the sum of its proper divisors (132837855004).

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

131320020032 is an equidigital number, since it uses as much as digits as its factorization.

131320020032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28107966 (or 28107956 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 131320020032 its reverse (230020023131), we get a palindrome (361340043163).

The spelling of 131320020032 in words is "one hundred thirty-one billion, three hundred twenty million, twenty thousand, thirty-two".