1312999203 has 16 divisors (see below), whose sum is σ = 1811609600. Its totient is φ = 845000640.

The previous prime is 1312999169. The next prime is 1312999253. The reversal of 1312999203 is 3029992131.

It is not a de Polignac number, because 1312999203 - 2¹² = 1312995107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312999253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20778 + ... + 55296.

It is an arithmetic number, because the mean of its divisors is an integer number (113225600).

Almost surely, 2^1312999203 is an apocalyptic number.

1312999203 is a deficient number, since it is larger than the sum of its proper divisors (498610397).

1312999203 is a wasteful number, since it uses less digits than its factorization.

1312999203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34962.

The product of its (nonzero) digits is 26244, while the sum is 39.

The square root of 1312999203 is about 36235.3308664348. The cubic root of 1312999203 is about 1095.0185781131.

The spelling of 1312999203 in words is "one billion, three hundred twelve million, nine hundred ninety-nine thousand, two hundred three".