23231901 has 32 divisors (see below), whose sum is σ = 38919168. Its totient is φ = 11975040.

The previous prime is 23231891. The next prime is 23231941. The reversal of 23231901 is 10913232.

It is a happy number.

It is not a de Polignac number, because 23231901 - 2⁵ = 23231869 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23231941) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37345 + ... + 37961.

It is an arithmetic number, because the mean of its divisors is an integer number (1216224).

Almost surely, 2^23231901 is an apocalyptic number.

23231901 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23231901 is a deficient number, since it is larger than the sum of its proper divisors (15687267).

23231901 is a wasteful number, since it uses less digits than its factorization.

23231901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 23231901 is about 4819.9482362366. The cubic root of 23231901 is about 285.3392942765.

It can be divided in two parts, 2323 and 1901, that added together give a palindrome (4224).

The spelling of 23231901 in words is "twenty-three million, two hundred thirty-one thousand, nine hundred one".