1312667396 has 6 divisors (see below), whose sum is σ = 2297167950. Its totient is φ = 656333696.

The previous prime is 1312667381. The next prime is 1312667401. The reversal of 1312667396 is 6937662131.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 800097796 + 512569600 = 28286^2 + 22640^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164083421 + ... + 164083428.

It is an arithmetic number, because the mean of its divisors is an integer number (382861325).

Almost surely, 2^1312667396 is an apocalyptic number.

It is an amenable number.

1312667396 is a deficient number, since it is larger than the sum of its proper divisors (984500554).

1312667396 is a wasteful number, since it uses less digits than its factorization.

1312667396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328166853 (or 328166851 counting only the distinct ones).

The product of its digits is 244944, while the sum is 44.

The square root of 1312667396 is about 36230.7520761024. The cubic root of 1312667396 is about 1094.9263299130.

The spelling of 1312667396 in words is "one billion, three hundred twelve million, six hundred sixty-seven thousand, three hundred ninety-six".