23162131 has 4 divisors (see below), whose sum is σ = 23213272. Its totient is φ = 23110992.

The previous prime is 23162107. The next prime is 23162189. The reversal of 23162131 is 13126132.

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 23162131 - 2⁷ = 23162003 is a prime.

It is a super-2 number, since 2×23162131² = 1072968624922322, 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 = 23162099 and 23162108.

It is not an unprimeable number, because it can be changed into a prime (23162831) 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, 24885 + ... + 25798.

It is an arithmetic number, because the mean of its divisors is an integer number (5803318).

Almost surely, 2^23162131 is an apocalyptic number.

23162131 is a deficient number, since it is larger than the sum of its proper divisors (51141).

23162131 is an equidigital number, since it uses as much as digits as its factorization.

23162131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51140.

The product of its digits is 216, while the sum is 19.

The square root of 23162131 is about 4812.7051644579. The cubic root of 23162131 is about 285.0533643788.

Adding to 23162131 its reverse (13126132), we get a palindrome (36288263).

The spelling of 23162131 in words is "twenty-three million, one hundred sixty-two thousand, one hundred thirty-one".