1397311996 has 12 divisors (see below), whose sum is σ = 2446307640. Its totient is φ = 698366960.

The previous prime is 1397311973. The next prime is 1397311999. The reversal of 1397311996 is 6991137931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397311999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61195 + ... + 80866.

It is an arithmetic number, because the mean of its divisors is an integer number (203858970).

Almost surely, 2^1397311996 is an apocalyptic number.

It is an amenable number.

1397311996 is a deficient number, since it is larger than the sum of its proper divisors (1048995644).

1397311996 is a wasteful number, since it uses less digits than its factorization.

1397311996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144524 (or 144522 counting only the distinct ones).

The product of its digits is 275562, while the sum is 49.

The square root of 1397311996 is about 37380.6366451937. The cubic root of 1397311996 is about 1117.9725213873.

The spelling of 1397311996 in words is "one billion, three hundred ninety-seven million, three hundred eleven thousand, nine hundred ninety-six".