23020031121 has 16 divisors (see below), whose sum is σ = 31608729600. Its totient is φ = 14895595728.

The previous prime is 23020031117. The next prime is 23020031131. The reversal of 23020031121 is 12113002032.

It is not a de Polignac number, because 23020031121 - 2² = 23020031117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23020031121.

It is not an unprimeable number, because it can be changed into a prime (23020031131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 809161 + ... + 837126.

It is an arithmetic number, because the mean of its divisors is an integer number (1975545600).

Almost surely, 2^23020031121 is an apocalyptic number.

It is an amenable number.

23020031121 is a deficient number, since it is larger than the sum of its proper divisors (8588698479).

23020031121 is a wasteful number, since it uses less digits than its factorization.

23020031121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1646428.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 23020031121 its reverse (12113002032), we get a palindrome (35133033153).

The spelling of 23020031121 in words is "twenty-three billion, twenty million, thirty-one thousand, one hundred twenty-one".