31004011431 has 48 divisors (see below), whose sum is σ = 48781025280. Its totient is φ = 18917585280.

The previous prime is 31004011427. The next prime is 31004011471. The reversal of 31004011431 is 13411040013.

It is not a de Polignac number, because 31004011431 - 2² = 31004011427 is a prime.

It is a super-2 number, since 2×31004011431² (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 (31004011411) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 543970 + ... + 598256.

It is an arithmetic number, because the mean of its divisors is an integer number (1016271360).

Almost surely, 2^31004011431 is an apocalyptic number.

31004011431 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

31004011431 is a deficient number, since it is larger than the sum of its proper divisors (17777013849).

31004011431 is a wasteful number, since it uses less digits than its factorization.

31004011431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54436 (or 54433 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 31004011431 its reverse (13411040013), we get a palindrome (44415051444).

The spelling of 31004011431 in words is "thirty-one billion, four million, eleven thousand, four hundred thirty-one".