23155413 has 4 divisors (see below), whose sum is σ = 30873888. Its totient is φ = 15436940.

The previous prime is 23155373. The next prime is 23155463. The reversal of 23155413 is 31455132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23155413 - 2⁸ = 23155157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23155463) 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, 3859233 + ... + 3859238.

It is an arithmetic number, because the mean of its divisors is an integer number (7718472).

Almost surely, 2^23155413 is an apocalyptic number.

It is an amenable number.

23155413 is a deficient number, since it is larger than the sum of its proper divisors (7718475).

23155413 is an equidigital number, since it uses as much as digits as its factorization.

23155413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7718474.

The product of its digits is 1800, while the sum is 24.

The square root of 23155413 is about 4812.0071695707. The cubic root of 23155413 is about 285.0258025269.

The spelling of 23155413 in words is "twenty-three million, one hundred fifty-five thousand, four hundred thirteen".