23220931 has 8 divisors (see below), whose sum is σ = 23767328. Its totient is φ = 22680000.

The previous prime is 23220919. The next prime is 23220937. The reversal of 23220931 is 13902232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23220931 - 2¹¹ = 23218883 is a prime.

It is a super-2 number, since 2×23220931² = 1078423273013522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23220937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7951 + ... + 10471.

It is an arithmetic number, because the mean of its divisors is an integer number (2970916).

Almost surely, 2^23220931 is an apocalyptic number.

23220931 is a deficient number, since it is larger than the sum of its proper divisors (546397).

23220931 is a wasteful number, since it uses less digits than its factorization.

23220931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2733.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 23220931 is about 4818.8101228415. The cubic root of 23220931 is about 285.2943752250.

The spelling of 23220931 in words is "twenty-three million, two hundred twenty thousand, nine hundred thirty-one".