231310012 has 6 divisors (see below), whose sum is σ = 404792528. Its totient is φ = 115655004.

The previous prime is 231309997. The next prime is 231310019. The reversal of 231310012 is 210013132.

231310012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 231309974 and 231310001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231310019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28913748 + ... + 28913755.

Almost surely, 2^231310012 is an apocalyptic number.

It is an amenable number.

231310012 is a deficient number, since it is larger than the sum of its proper divisors (173482516).

231310012 is a wasteful number, since it uses less digits than its factorization.

231310012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57827507 (or 57827505 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 231310012 is about 15208.8793801516. The cubic root of 231310012 is about 613.8536045706.

Adding to 231310012 its reverse (210013132), we get a palindrome (441323144).

The spelling of 231310012 in words is "two hundred thirty-one million, three hundred ten thousand, twelve".