131023443051 has 40 divisors (see below), whose sum is σ = 204350704800. Its totient is φ = 83504348928.

The previous prime is 131023443043. The next prime is 131023443073. The reversal of 131023443051 is 150344320131.

It is a happy number.

131023443051 is a `hidden beast` number, since 1 + 3 + 10 + 2 + 344 + 305 + 1 = 666.

It is not a de Polignac number, because 131023443051 - 2³ = 131023443043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (131023443041) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3470625 + ... + 3508173.

It is an arithmetic number, because the mean of its divisors is an integer number (5108767620).

Almost surely, 2^131023443051 is an apocalyptic number.

131023443051 is a deficient number, since it is larger than the sum of its proper divisors (73327261749).

131023443051 is a wasteful number, since it uses less digits than its factorization.

131023443051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39457 (or 39448 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 131023443051 its reverse (150344320131), we get a palindrome (281367763182).

The spelling of 131023443051 in words is "one hundred thirty-one billion, twenty-three million, four hundred forty-three thousand, fifty-one".