22715331 has 4 divisors (see below), whose sum is σ = 30287112. Its totient is φ = 15143552.

The previous prime is 22715321. The next prime is 22715333. The reversal of 22715331 is 13351722.

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

It is a cyclic number.

It is not a de Polignac number, because 22715331 - 2⁶ = 22715267 is a prime.

It is a super-2 number, since 2×22715331² = 1031972524879122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22715333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3785886 + ... + 3785891.

It is an arithmetic number, because the mean of its divisors is an integer number (7571778).

Almost surely, 2^22715331 is an apocalyptic number.

22715331 is a deficient number, since it is larger than the sum of its proper divisors (7571781).

22715331 is an equidigital number, since it uses as much as digits as its factorization.

22715331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7571780.

The product of its digits is 1260, while the sum is 24.

The square root of 22715331 is about 4766.0603227404. The cubic root of 22715331 is about 283.2085474335.

The spelling of 22715331 in words is "twenty-two million, seven hundred fifteen thousand, three hundred thirty-one".