311299999999 has 4 divisors (see below), whose sum is σ = 311429764800. Its totient is φ = 311170235200.

The previous prime is 311299999993. The next prime is 311300000009. The reversal of 311299999999 is 999999992113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 311299999999 - 2²⁷ = 311165782271 is a prime.

It is a Duffinian number.

311299999999 is a modest number, since divided by 999999 gives 311299 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311299999993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64878802 + ... + 64883599.

It is an arithmetic number, because the mean of its divisors is an integer number (77857441200).

Almost surely, 2^311299999999 is an apocalyptic number.

311299999999 is a deficient number, since it is larger than the sum of its proper divisors (129764801).

311299999999 is a wasteful number, since it uses less digits than its factorization.

311299999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129764800.

The product of its digits is 258280326, while the sum is 79.

The spelling of 311299999999 in words is "three hundred eleven billion, two hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-nine".