23043310031021 has 48 divisors (see below), whose sum is σ = 27915669282816. Its totient is φ = 18597881120544.

The previous prime is 23043310030999. The next prime is 23043310031047. The reversal of 23043310031021 is 12013001334032.

It is a de Polignac number, because none of the positive numbers 2^k-23043310031021 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23043310031051) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1132506170 + ... + 1132526516.

It is an arithmetic number, because the mean of its divisors is an integer number (581576443392).

Almost surely, 2^{23043310031021} is an apocalyptic number.

It is an amenable number.

23043310031021 is a deficient number, since it is larger than the sum of its proper divisors (4872359251795).

23043310031021 is a wasteful number, since it uses less digits than its factorization.

23043310031021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22078 (or 22011 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 23043310031021 its reverse (12013001334032), we get a palindrome (35056311365053).

The spelling of 23043310031021 in words is "twenty-three trillion, forty-three billion, three hundred ten million, thirty-one thousand, twenty-one".