23010031021 has 4 divisors (see below), whose sum is σ = 23023576000. Its totient is φ = 22996486044.

The previous prime is 23010031019. The next prime is 23010031027. The reversal of 23010031021 is 12013001032.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23010031021 - 2¹ = 23010031019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23010030992 and 23010031010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23010031027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6769941 + ... + 6773338.

It is an arithmetic number, because the mean of its divisors is an integer number (5755894000).

Almost surely, 2^23010031021 is an apocalyptic number.

It is an amenable number.

23010031021 is a deficient number, since it is larger than the sum of its proper divisors (13544979).

23010031021 is a wasteful number, since it uses less digits than its factorization.

23010031021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13544978.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 23010031021 its reverse (12013001032), we get a palindrome (35023032053).

It can be divided in two parts, 230100 and 31021, that added together give a square (261121 = 511²).

The spelling of 23010031021 in words is "twenty-three billion, ten million, thirty-one thousand, twenty-one".