23261567 has 32 divisors (see below), whose sum is σ = 29913600. Its totient is φ = 17635968.

The previous prime is 23261549. The next prime is 23261573. The reversal of 23261567 is 76516232.

It is not a de Polignac number, because 23261567 - 2⁸ = 23261311 is a prime.

It is a super-2 number, since 2×23261567² = 1082200998590978, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23261467) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 142628 + ... + 142790.

It is an arithmetic number, because the mean of its divisors is an integer number (934800).

Almost surely, 2^23261567 is an apocalyptic number.

23261567 is a deficient number, since it is larger than the sum of its proper divisors (6652033).

23261567 is a wasteful number, since it uses less digits than its factorization.

23261567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255.

The product of its digits is 15120, while the sum is 32.

The square root of 23261567 is about 4823.0246733767. The cubic root of 23261567 is about 285.4606973848.

Adding to 23261567 its reverse (76516232), we get a palindrome (99777799).

The spelling of 23261567 in words is "twenty-three million, two hundred sixty-one thousand, five hundred sixty-seven".