23313012521 has 16 divisors (see below), whose sum is σ = 25181122560. Its totient is φ = 21513476880.

The previous prime is 23313012493. The next prime is 23313012551. The reversal of 23313012521 is 12521031332.

It is a cyclic number.

It is not a de Polignac number, because 23313012521 - 2¹⁰ = 23313011497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23313012551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126560 + ... + 250286.

It is an arithmetic number, because the mean of its divisors is an integer number (1573820160).

Almost surely, 2^23313012521 is an apocalyptic number.

It is an amenable number.

23313012521 is a deficient number, since it is larger than the sum of its proper divisors (1868110039).

23313012521 is a wasteful number, since it uses less digits than its factorization.

23313012521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124004.

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 23313012521 its reverse (12521031332), we get a palindrome (35834043853).

The spelling of 23313012521 in words is "twenty-three billion, three hundred thirteen million, twelve thousand, five hundred twenty-one".