1312797937 has 8 divisors (see below), whose sum is σ = 1462614912. Its totient is φ = 1168059600.

The previous prime is 1312797931. The next prime is 1312797943. The reversal of 1312797937 is 7397972131.

It is an interprime number because it is at equal distance from previous prime (1312797931) and next prime (1312797943).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1312797937 - 2³ = 1312797929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1312797931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1269114 + ... + 1270147.

It is an arithmetic number, because the mean of its divisors is an integer number (182826864).

Almost surely, 2^1312797937 is an apocalyptic number.

It is an amenable number.

1312797937 is a deficient number, since it is larger than the sum of its proper divisors (149816975).

1312797937 is a wasteful number, since it uses less digits than its factorization.

1312797937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2539319.

The product of its digits is 500094, while the sum is 49.

The square root of 1312797937 is about 36232.5535534000. The cubic root of 1312797937 is about 1094.9626244688.

The spelling of 1312797937 in words is "one billion, three hundred twelve million, seven hundred ninety-seven thousand, nine hundred thirty-seven".