23401231 has 16 divisors (see below), whose sum is σ = 29298240. Its totient is φ = 18224640.

The previous prime is 23401211. The next prime is 23401267. The reversal of 23401231 is 13210432.

It is a happy number.

It is not a de Polignac number, because 23401231 - 2⁵ = 23401199 is a prime.

It is a super-2 number, since 2×23401231² = 1095235224630722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23401211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61 + ... + 6841.

It is an arithmetic number, because the mean of its divisors is an integer number (1831140).

Almost surely, 2^23401231 is an apocalyptic number.

23401231 is a deficient number, since it is larger than the sum of its proper divisors (5897009).

23401231 is a wasteful number, since it uses less digits than its factorization.

23401231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6834.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 23401231 is about 4837.4818862710. The cubic root of 23401231 is about 286.0308661489.

Adding to 23401231 its reverse (13210432), we get a palindrome (36611663).

It can be divided in two parts, 23401 and 231, that added together give a palindrome (23632).

The spelling of 23401231 in words is "twenty-three million, four hundred one thousand, two hundred thirty-one".