23132013621 has 16 divisors (see below), whose sum is σ = 31291004160. Its totient is φ = 15197906880.

The previous prime is 23132013617. The next prime is 23132013623. The reversal of 23132013621 is 12631023132.

It is not a de Polignac number, because 23132013621 - 2² = 23132013617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23132013591 and 23132013600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23132013623) 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, 38011 + ... + 218423.

It is an arithmetic number, because the mean of its divisors is an integer number (1955687760).

Almost surely, 2^23132013621 is an apocalyptic number.

It is an amenable number.

23132013621 is a deficient number, since it is larger than the sum of its proper divisors (8158990539).

23132013621 is a wasteful number, since it uses less digits than its factorization.

23132013621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181036.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 23132013621 its reverse (12631023132), we get a palindrome (35763036753).

The spelling of 23132013621 in words is "twenty-three billion, one hundred thirty-two million, thirteen thousand, six hundred twenty-one".