23213320031 has 4 divisors (see below), whose sum is σ = 25323621864. Its totient is φ = 21103018200.

The previous prime is 23213320007. The next prime is 23213320049. The reversal of 23213320031 is 13002331232.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 23213320031 - 2⁶ = 23213319967 is a prime.

It is a super-2 number, since 2×23213320031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23213319985 and 23213320012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23213320931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1055150900 + ... + 1055150921.

It is an arithmetic number, because the mean of its divisors is an integer number (6330905466).

Almost surely, 2^23213320031 is an apocalyptic number.

23213320031 is a deficient number, since it is larger than the sum of its proper divisors (2110301833).

23213320031 is a wasteful number, since it uses less digits than its factorization.

23213320031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2110301832.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 23213320031 its reverse (13002331232), we get a palindrome (36215651263).

The spelling of 23213320031 in words is "twenty-three billion, two hundred thirteen million, three hundred twenty thousand, thirty-one".