1312315412 has 12 divisors (see below), whose sum is σ = 2296867860. Its totient is φ = 656067456.

The previous prime is 1312315363. The next prime is 1312315421. The reversal of 1312315412 is 2145132131.

It can be written as a sum of positive squares in 2 ways, for example, as 385965316 + 926350096 = 19646^2 + 30436^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18428 + ... + 54444.

It is an arithmetic number, because the mean of its divisors is an integer number (191405655).

Almost surely, 2^1312315412 is an apocalyptic number.

It is an amenable number.

1312315412 is a deficient number, since it is larger than the sum of its proper divisors (984552448).

1312315412 is a wasteful number, since it uses less digits than its factorization.

1312315412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45130 (or 45128 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 1312315412 is about 36225.8942194668. The cubic root of 1312315412 is about 1094.8284551574.

Adding to 1312315412 its reverse (2145132131), we get a palindrome (3457447543).

The spelling of 1312315412 in words is "one billion, three hundred twelve million, three hundred fifteen thousand, four hundred twelve".