40013352431 has 16 divisors (see below), whose sum is σ = 43379041440. Its totient is φ = 36907490880.

The previous prime is 40013352413. The next prime is 40013352433. The reversal of 40013352431 is 13425331004.

It is a de Polignac number, because none of the positive numbers 2^k-40013352431 is a prime.

It is a super-2 number, since 2×40013352431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40013352431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40013352433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3252011 + ... + 3264291.

It is an arithmetic number, because the mean of its divisors is an integer number (2711190090).

Almost surely, 2^40013352431 is an apocalyptic number.

40013352431 is a deficient number, since it is larger than the sum of its proper divisors (3365689009).

40013352431 is a wasteful number, since it uses less digits than its factorization.

40013352431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13803 (or 13777 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 40013352431 its reverse (13425331004), we get a palindrome (53438683435).

The spelling of 40013352431 in words is "forty billion, thirteen million, three hundred fifty-two thousand, four hundred thirty-one".