21313000112031 has 24 divisors (see below), whose sum is σ = 32597008114320. Its totient is φ = 13372594096896.

The previous prime is 21313000112023. The next prime is 21313000112059. The reversal of 21313000112031 is 13021100031312.

21313000112031 is a `hidden beast` number, since 213 + 1 + 300 + 0 + 1 + 120 + 31 = 666.

It is not a de Polignac number, because 21313000112031 - 2³ = 21313000112023 is a prime.

It is a super-2 number, since 2×21313000112031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21313000111995 and 21313000112013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21313000312031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6380265 + ... + 9128733.

It is an arithmetic number, because the mean of its divisors is an integer number (1358208671430).

Almost surely, 2^{21313000112031} is an apocalyptic number.

21313000112031 is a deficient number, since it is larger than the sum of its proper divisors (11284008002289).

21313000112031 is a wasteful number, since it uses less digits than its factorization.

21313000112031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2799175 (or 2799172 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 21313000112031 its reverse (13021100031312), we get a palindrome (34334100143343).

The spelling of 21313000112031 in words is "twenty-one trillion, three hundred thirteen billion, one hundred twelve thousand, thirty-one".