1312997734 has 16 divisors (see below), whose sum is σ = 2098856448. Its totient is φ = 614593672.

The previous prime is 1312997713. The next prime is 1312997747. The reversal of 1312997734 is 4377992131.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 301492 + ... + 305815.

It is an arithmetic number, because the mean of its divisors is an integer number (131178528).

Almost surely, 2^1312997734 is an apocalyptic number.

1312997734 is a deficient number, since it is larger than the sum of its proper divisors (785858714).

1312997734 is a wasteful number, since it uses less digits than its factorization.

1312997734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607379.

The product of its digits is 285768, while the sum is 46.

The square root of 1312997734 is about 36235.3105961574. The cubic root of 1312997734 is about 1095.0181697394.

The spelling of 1312997734 in words is "one billion, three hundred twelve million, nine hundred ninety-seven thousand, seven hundred thirty-four".