31044012431 has 16 divisors (see below), whose sum is σ = 32149627008. Its totient is φ = 29953476000.

The previous prime is 31044012427. The next prime is 31044012449. The reversal of 31044012431 is 13421044013.

It is a cyclic number.

It is not a de Polignac number, because 31044012431 - 2² = 31044012427 is a prime.

It is a super-2 number, since 2×31044012431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31044012397 and 31044012406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31044012421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2202356 + ... + 2216406.

It is an arithmetic number, because the mean of its divisors is an integer number (2009351688).

Almost surely, 2^31044012431 is an apocalyptic number.

31044012431 is a deficient number, since it is larger than the sum of its proper divisors (1105614577).

31044012431 is a wasteful number, since it uses less digits than its factorization.

31044012431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14582.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 31044012431 its reverse (13421044013), we get a palindrome (44465056444).

The spelling of 31044012431 in words is "thirty-one billion, forty-four million, twelve thousand, four hundred thirty-one".