40013312631 has 8 divisors (see below), whose sum is σ = 53352025200. Its totient is φ = 26675070912.

The previous prime is 40013312623. The next prime is 40013312657. The reversal of 40013312631 is 13621331004.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40013312631 - 2³ = 40013312623 is a prime.

It is a super-2 number, since 2×40013312631² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40013312231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214611 + ... + 355083.

It is an arithmetic number, because the mean of its divisors is an integer number (6669003150).

Almost surely, 2^40013312631 is an apocalyptic number.

40013312631 is a deficient number, since it is larger than the sum of its proper divisors (13338712569).

40013312631 is a wasteful number, since it uses less digits than its factorization.

40013312631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235425.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 40013312631 its reverse (13621331004), we get a palindrome (53634643635).

The spelling of 40013312631 in words is "forty billion, thirteen million, three hundred twelve thousand, six hundred thirty-one".