311530400013 has 8 divisors (see below), whose sum is σ = 474712990528. Its totient is φ = 178017371424.

The previous prime is 311530400009. The next prime is 311530400029. The reversal of 311530400013 is 310004035113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 311530400013 - 2² = 311530400009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 14834780953 = 311530400013 / (3 + 1 + 1 + 5 + 3 + 0 + 4 + 0 + 0 + 0 + 1 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311530400413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7417390456 + ... + 7417390497.

It is an arithmetic number, because the mean of its divisors is an integer number (59339123816).

Almost surely, 2^311530400013 is an apocalyptic number.

It is an amenable number.

311530400013 is a deficient number, since it is larger than the sum of its proper divisors (163182590515).

311530400013 is a wasteful number, since it uses less digits than its factorization.

311530400013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14834780963.

The product of its (nonzero) digits is 540, while the sum is 21.

Adding to 311530400013 its reverse (310004035113), we get a palindrome (621534435126).

The spelling of 311530400013 in words is "three hundred eleven billion, five hundred thirty million, four hundred thousand, thirteen".