231313104 has 80 divisors (see below), whose sum is σ = 724328640. Its totient is φ = 70093440.

The previous prime is 231313091. The next prime is 231313109. The reversal of 231313104 is 401313132.

231313104 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×231313104² = 107011504164229632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231313109) 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, 19587 + ... + 29090.

It is an arithmetic number, because the mean of its divisors is an integer number (9054108).

Almost surely, 2^231313104 is an apocalyptic number.

231313104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

231313104 is an abundant number, since it is smaller than the sum of its proper divisors (493015536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231313104 is a wasteful number, since it uses less digits than its factorization.

231313104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48705 (or 48693 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 231313104 is about 15208.9810309567. The cubic root of 231313104 is about 613.8563397554.

Adding to 231313104 its reverse (401313132), we get a palindrome (632626236).

The spelling of 231313104 in words is "two hundred thirty-one million, three hundred thirteen thousand, one hundred four".