1312920799 has 16 divisors (see below), whose sum is σ = 1421452800. Its totient is φ = 1208934496.

The previous prime is 1312920797. The next prime is 1312920803. The reversal of 1312920799 is 9970292131.

It is a cyclic number.

It is not a de Polignac number, because 1312920799 - 2¹ = 1312920797 is a prime.

It is a super-2 number, since 2×1312920799² = 3447522048893596802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312920797) 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, 236712 + ... + 242194.

It is an arithmetic number, because the mean of its divisors is an integer number (88840800).

Almost surely, 2^1312920799 is an apocalyptic number.

1312920799 is a deficient number, since it is larger than the sum of its proper divisors (108532001).

1312920799 is a wasteful number, since it uses less digits than its factorization.

1312920799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5894.

The product of its (nonzero) digits is 61236, while the sum is 43.

The square root of 1312920799 is about 36234.2489780042. The cubic root of 1312920799 is about 1094.9967818202.

The spelling of 1312920799 in words is "one billion, three hundred twelve million, nine hundred twenty thousand, seven hundred ninety-nine".