311442023999 has 4 divisors (see below), whose sum is σ = 311961961200. Its totient is φ = 310922086800.

The previous prime is 311442023941. The next prime is 311442024053. The reversal of 311442023999 is 999320244113.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311442023999 is a prime.

It is a super-2 number, since 2×311442023999² (a number of 24 digits) 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 (311442023699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 259967702 + ... + 259968899.

It is an arithmetic number, because the mean of its divisors is an integer number (77990490300).

Almost surely, 2^311442023999 is an apocalyptic number.

311442023999 is a deficient number, since it is larger than the sum of its proper divisors (519937201).

311442023999 is an equidigital number, since it uses as much as digits as its factorization.

311442023999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519937200.

The product of its (nonzero) digits is 419904, while the sum is 47.

The spelling of 311442023999 in words is "three hundred eleven billion, four hundred forty-two million, twenty-three thousand, nine hundred ninety-nine".