1312997733 has 24 divisors (see below), whose sum is σ = 1972507680. Its totient is φ = 840944160.

The previous prime is 1312997713. The next prime is 1312997747. The reversal of 1312997733 is 3377992131.

It is a happy number.

It is not a de Polignac number, because 1312997733 - 2¹⁰ = 1312996709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312997713) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 4203 + ... + 51416.

It is an arithmetic number, because the mean of its divisors is an integer number (82187820).

Almost surely, 2^1312997733 is an apocalyptic number.

It is an amenable number.

1312997733 is a deficient number, since it is larger than the sum of its proper divisors (659509947).

1312997733 is a wasteful number, since it uses less digits than its factorization.

1312997733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55729 (or 55726 counting only the distinct ones).

The product of its digits is 214326, while the sum is 45.

The square root of 1312997733 is about 36235.3105823587. The cubic root of 1312997733 is about 1095.0181694614.

The spelling of 1312997733 in words is "one billion, three hundred twelve million, nine hundred ninety-seven thousand, seven hundred thirty-three".