1312997735 has 16 divisors (see below), whose sum is σ = 1844603712. Its totient is φ = 878380800.

The previous prime is 1312997713. The next prime is 1312997747. The reversal of 1312997735 is 5377992131.

It is not a de Polignac number, because 1312997735 - 2⁸ = 1312997479 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1312997735.

It is a congruent number.

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, 456056 + ... + 458925.

It is an arithmetic number, because the mean of its divisors is an integer number (115287732).

Almost surely, 2^1312997735 is an apocalyptic number.

1312997735 is a deficient number, since it is larger than the sum of its proper divisors (531605977).

1312997735 is an equidigital number, since it uses as much as digits as its factorization.

1312997735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915034.

The product of its digits is 357210, while the sum is 47.

The square root of 1312997735 is about 36235.3106099561. The cubic root of 1312997735 is about 1095.0181700174.

The spelling of 1312997735 in words is "one billion, three hundred twelve million, nine hundred ninety-seven thousand, seven hundred thirty-five".