23213130321 has 16 divisors (see below), whose sum is σ = 31305415680. Its totient is φ = 15298208640.

The previous prime is 23213130289. The next prime is 23213130371. The reversal of 23213130321 is 12303131232.

It is not a de Polignac number, because 23213130321 - 2⁵ = 23213130289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23213130371) 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, 2091216 + ... + 2102286.

It is an arithmetic number, because the mean of its divisors is an integer number (1956588480).

Almost surely, 2^23213130321 is an apocalyptic number.

It is an amenable number.

23213130321 is a deficient number, since it is larger than the sum of its proper divisors (8092285359).

23213130321 is a wasteful number, since it uses less digits than its factorization.

23213130321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19016.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 23213130321 its reverse (12303131232), we get a palindrome (35516261553).

The spelling of 23213130321 in words is "twenty-three billion, two hundred thirteen million, one hundred thirty thousand, three hundred twenty-one".