31400021030231 has 16 divisors (see below), whose sum is σ = 37799329382400. Its totient is φ = 26046100384920.

The previous prime is 31400021030179. The next prime is 31400021030243. The reversal of 31400021030231 is 13203012000413.

It is not a de Polignac number, because 31400021030231 - 2³⁸ = 31125143123287 is a prime.

It is a super-2 number, since 2×31400021030231² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31400021030281) 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, 1476525671 + ... + 1476546936.

It is an arithmetic number, because the mean of its divisors is an integer number (2362458086400).

Almost surely, 2^{31400021030231} is an apocalyptic number.

31400021030231 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

31400021030231 is a deficient number, since it is larger than the sum of its proper divisors (6399308352169).

31400021030231 is an equidigital number, since it uses as much as digits as its factorization.

31400021030231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2953072659 (or 2953072645 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31400021030231 its reverse (13203012000413), we get a palindrome (44603033030644).

The spelling of 31400021030231 in words is "thirty-one trillion, four hundred billion, twenty-one million, thirty thousand, two hundred thirty-one".