23312021031 has 12 divisors (see below), whose sum is σ = 36263144008. Its totient is φ = 14345859024.

The previous prime is 23312020973. The next prime is 23312021119. The reversal of 23312021031 is 13012021332.

It is not a de Polignac number, because 23312021031 - 2¹⁵ = 23311988263 is a prime.

It is a super-2 number, since 2×23312021031² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23312020995 and 23312021013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23312021231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99623905 + ... + 99624138.

Almost surely, 2^23312021031 is an apocalyptic number.

23312021031 is a deficient number, since it is larger than the sum of its proper divisors (12951122977).

23312021031 is a wasteful number, since it uses less digits than its factorization.

23312021031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199248062 (or 199248059 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 23312021031 its reverse (13012021332), we get a palindrome (36324042363).

The spelling of 23312021031 in words is "twenty-three billion, three hundred twelve million, twenty-one thousand, thirty-one".