311400013 has 4 divisors (see below), whose sum is σ = 324939168. Its totient is φ = 297860860.

The previous prime is 311400007. The next prime is 311400071. The reversal of 311400013 is 310004113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 311400013 - 2¹⁷ = 311268941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311399966 and 311400002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311400083) 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, 6769543 + ... + 6769588.

It is an arithmetic number, because the mean of its divisors is an integer number (81234792).

Almost surely, 2^311400013 is an apocalyptic number.

It is an amenable number.

311400013 is a deficient number, since it is larger than the sum of its proper divisors (13539155).

311400013 is a wasteful number, since it uses less digits than its factorization.

311400013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13539154.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 311400013 is about 17646.5297721677. The cubic root of 311400013 is about 677.8072483398.

Adding to 311400013 its reverse (310004113), we get a palindrome (621404126).

The spelling of 311400013 in words is "three hundred eleven million, four hundred thousand, thirteen".