1231315012 has 48 divisors (see below), whose sum is σ = 2246453440. Its totient is φ = 590198400.

The previous prime is 1231314983. The next prime is 1231315081. The reversal of 1231315012 is 2105131321.

It is a super-2 number, since 2×1231315012² = 3032273317553120288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1781587 + ... + 1782277.

Almost surely, 2^1231315012 is an apocalyptic number.

It is an amenable number.

1231315012 is a deficient number, since it is larger than the sum of its proper divisors (1015138428).

1231315012 is a wasteful number, since it uses less digits than its factorization.

1231315012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932 (or 930 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1231315012 is about 35090.0984894600. The cubic root of 1231315012 is about 1071.8229651683.

Adding to 1231315012 its reverse (2105131321), we get a palindrome (3336446333).

The spelling of 1231315012 in words is "one billion, two hundred thirty-one million, three hundred fifteen thousand, twelve".