23121022031 has 8 divisors (see below), whose sum is σ = 23178204000. Its totient is φ = 23063903200.

The previous prime is 23121021997. The next prime is 23121022061. The reversal of 23121022031 is 13022012132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23121022031 is a prime.

It is a super-2 number, since 2×23121022031² (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 (23121022061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 764465 + ... + 794133.

It is an arithmetic number, because the mean of its divisors is an integer number (2897275500).

Almost surely, 2^23121022031 is an apocalyptic number.

23121022031 is a deficient number, since it is larger than the sum of its proper divisors (57181969).

23121022031 is a wasteful number, since it uses less digits than its factorization.

23121022031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31569.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 23121022031 its reverse (13022012132), we get a palindrome (36143034163).

The spelling of 23121022031 in words is "twenty-three billion, one hundred twenty-one million, twenty-two thousand, thirty-one".