23220312031 has 12 divisors (see below), whose sum is σ = 27250428672. Its totient is φ = 19726986048.

The previous prime is 23220312029. The next prime is 23220312043. The reversal of 23220312031 is 13021302232.

It is not a de Polignac number, because 23220312031 - 2¹ = 23220312029 is a prime.

It is a super-2 number, since 2×23220312031² (a number of 22 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 (23220312001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2091295 + ... + 2102368.

It is an arithmetic number, because the mean of its divisors is an integer number (2270869056).

Almost surely, 2^23220312031 is an apocalyptic number.

23220312031 is a deficient number, since it is larger than the sum of its proper divisors (4030116641).

23220312031 is a wasteful number, since it uses less digits than its factorization.

23220312031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4193790 (or 4193783 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 23220312031 its reverse (13021302232), we get a palindrome (36241614263).

The spelling of 23220312031 in words is "twenty-three billion, two hundred twenty million, three hundred twelve thousand, thirty-one".