21130312022031 has 16 divisors (see below), whose sum is σ = 28181426604800. Its totient is φ = 14083036394688.

The previous prime is 21130312022021. The next prime is 21130312022041. The reversal of 21130312022031 is 13022021303112.

It is an interprime number because it is at equal distance from previous prime (21130312022021) and next prime (21130312022041).

It is not a de Polignac number, because 21130312022031 - 2¹¹ = 21130312019983 is a prime.

It is a super-2 number, since 2×21130312022031² (a number of 27 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 = 21130312021989 and 21130312022007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21130312022021) 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, 521471190 + ... + 521511708.

It is an arithmetic number, because the mean of its divisors is an integer number (1761339162800).

Almost surely, 2^{21130312022031} is an apocalyptic number.

21130312022031 is a deficient number, since it is larger than the sum of its proper divisors (7051114582769).

21130312022031 is a wasteful number, since it uses less digits than its factorization.

21130312022031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83598.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21130312022031 its reverse (13022021303112), we get a palindrome (34152333325143).

The spelling of 21130312022031 in words is "twenty-one trillion, one hundred thirty billion, three hundred twelve million, twenty-two thousand, thirty-one".