231012313 has 6 divisors (see below), whose sum is σ = 268728666. Its totient is φ = 198010512.

The previous prime is 231012283. The next prime is 231012367. The reversal of 231012313 is 313210132.

It can be written as a sum of positive squares in only one way, i.e., 230948809 + 63504 = 15197^2 + 252^2 .

It is not a de Polignac number, because 231012313 - 2⁹ = 231011801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231012373) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2357220 + ... + 2357317.

It is an arithmetic number, because the mean of its divisors is an integer number (44788111).

Almost surely, 2^231012313 is an apocalyptic number.

It is an amenable number.

231012313 is a deficient number, since it is larger than the sum of its proper divisors (37716353).

231012313 is an equidigital number, since it uses as much as digits as its factorization.

231012313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4714551 (or 4714544 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 231012313 is about 15199.0892161340. The cubic root of 231012313 is about 613.5901456502.

Adding to 231012313 its reverse (313210132), we get a palindrome (544222445).

The spelling of 231012313 in words is "two hundred thirty-one million, twelve thousand, three hundred thirteen".