23355131 has 4 divisors (see below), whose sum is σ = 23738064. Its totient is φ = 22972200.

The previous prime is 23355107. The next prime is 23355133. The reversal of 23355131 is 13155332.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23355131 is a prime.

It is a super-2 number, since 2×23355131² = 1090924288054322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23355097 and 23355106.

It is not an unprimeable number, because it can be changed into a prime (23355133) 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, 191375 + ... + 191496.

It is an arithmetic number, because the mean of its divisors is an integer number (5934516).

Almost surely, 2^23355131 is an apocalyptic number.

23355131 is a deficient number, since it is larger than the sum of its proper divisors (382933).

23355131 is an equidigital number, since it uses as much as digits as its factorization.

23355131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382932.

The product of its digits is 1350, while the sum is 23.

The square root of 23355131 is about 4832.7146615541. The cubic root of 23355131 is about 285.8429174727.

The spelling of 23355131 in words is "twenty-three million, three hundred fifty-five thousand, one hundred thirty-one".