40431522131 has 64 divisors (see below), whose sum is σ = 57618355200. Its totient is φ = 27549434880.

The previous prime is 40431522121. The next prime is 40431522133. The reversal of 40431522131 is 13122513404.

It is a happy number.

It is not a de Polignac number, because 40431522131 - 2²² = 40427327827 is a prime.

It is a super-2 number, since 2×40431522131² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40431522131.

It is not an unprimeable number, because it can be changed into a prime (40431522133) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2292515 + ... + 2310083.

It is an arithmetic number, because the mean of its divisors is an integer number (900286800).

Almost surely, 2^40431522131 is an apocalyptic number.

40431522131 is a deficient number, since it is larger than the sum of its proper divisors (17186833069).

40431522131 is a wasteful number, since it uses less digits than its factorization.

40431522131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17641 (or 17619 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The spelling of 40431522131 in words is "forty billion, four hundred thirty-one million, five hundred twenty-two thousand, one hundred thirty-one".