23131020121 has 8 divisors (see below), whose sum is σ = 26330963904. Its totient is φ = 20113930320.

The previous prime is 23131020103. The next prime is 23131020127. The reversal of 23131020121 is 12102013132.

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

It is not a de Polignac number, because 23131020121 - 2¹⁷ = 23130889049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23131020095 and 23131020104.

It is not an unprimeable number, because it can be changed into a prime (23131020127) 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, 45713226 + ... + 45713731.

It is an arithmetic number, because the mean of its divisors is an integer number (3291370488).

Almost surely, 2^23131020121 is an apocalyptic number.

It is an amenable number.

23131020121 is a deficient number, since it is larger than the sum of its proper divisors (3199943783).

23131020121 is a wasteful number, since it uses less digits than its factorization.

23131020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91426991.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 23131020121 its reverse (12102013132), we get a palindrome (35233033253).

The spelling of 23131020121 in words is "twenty-three billion, one hundred thirty-one million, twenty thousand, one hundred twenty-one".