231113312 has 12 divisors (see below), whose sum is σ = 455004396. Its totient is φ = 115556640.

The previous prime is 231113303. The next prime is 231113327. The reversal of 231113312 is 213311132.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3611114 + ... + 3611177.

It is an arithmetic number, because the mean of its divisors is an integer number (37917033).

Almost surely, 2^231113312 is an apocalyptic number.

It is an amenable number.

231113312 is a deficient number, since it is larger than the sum of its proper divisors (223891084).

231113312 is an equidigital number, since it uses as much as digits as its factorization.

231113312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7222301 (or 7222293 counting only the distinct ones).

The product of its digits is 108, while the sum is 17.

The square root of 231113312 is about 15202.4113876714. The cubic root of 231113312 is about 613.6795535279.

Adding to 231113312 its reverse (213311132), we get a palindrome (444424444).

The spelling of 231113312 in words is "two hundred thirty-one million, one hundred thirteen thousand, three hundred twelve".