40131031402 has 32 divisors (see below), whose sum is σ = 79464965760. Its totient is φ = 14715732480.

The previous prime is 40131031387. The next prime is 40131031403. The reversal of 40131031402 is 20413013104.

It is a super-2 number, since 2×40131031402² (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 40131031402.

It is not an unprimeable number, because it can be changed into a prime (40131031403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7661827 + ... + 7667062.

It is an arithmetic number, because the mean of its divisors is an integer number (2483280180).

Almost surely, 2^40131031402 is an apocalyptic number.

40131031402 is a deficient number, since it is larger than the sum of its proper divisors (39333934358).

40131031402 is a wasteful number, since it uses less digits than its factorization.

40131031402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15328926.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 40131031402 its reverse (20413013104), we get a palindrome (60544044506).

The spelling of 40131031402 in words is "forty billion, one hundred thirty-one million, thirty-one thousand, four hundred two".