23436131 has 4 divisors (see below), whose sum is σ = 23785992. Its totient is φ = 23086272.

The previous prime is 23436113. The next prime is 23436167. The reversal of 23436131 is 13163432.

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 23436131 - 2⁶ = 23436067 is a prime.

It is a super-2 number, since 2×23436131² = 1098504472498322, 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 = 23436097 and 23436106.

It is not an unprimeable number, because it can be changed into a prime (23436181) 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, 174830 + ... + 174963.

It is an arithmetic number, because the mean of its divisors is an integer number (5946498).

Almost surely, 2^23436131 is an apocalyptic number.

23436131 is a deficient number, since it is larger than the sum of its proper divisors (349861).

23436131 is an equidigital number, since it uses as much as digits as its factorization.

23436131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349860.

The product of its digits is 1296, while the sum is 23.

The square root of 23436131 is about 4841.0877909825. The cubic root of 23436131 is about 286.1729885697.

Adding to 23436131 its reverse (13163432), we get a palindrome (36599563).

The spelling of 23436131 in words is "twenty-three million, four hundred thirty-six thousand, one hundred thirty-one".