311310013 has 8 divisors (see below), whose sum is σ = 355908800. Its totient is φ = 266742720.

The previous prime is 311309989. The next prime is 311310053. The reversal of 311310013 is 310013113.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 311310013 - 2⁹ = 311309501 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311309975 and 311310002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311310053) 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, 19813 + ... + 31861.

It is an arithmetic number, because the mean of its divisors is an integer number (44488600).

Almost surely, 2^311310013 is an apocalyptic number.

It is an amenable number.

311310013 is a deficient number, since it is larger than the sum of its proper divisors (44598787).

311310013 is a wasteful number, since it uses less digits than its factorization.

311310013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15747.

The product of its (nonzero) digits is 27, while the sum is 13.

The square root of 311310013 is about 17643.9795114368. The cubic root of 311310013 is about 677.7419427011.

Adding to 311310013 its reverse (310013113), we get a palindrome (621323126).

It can be divided in two parts, 3113100 and 13, that added together give a palindrome (3113113).

The spelling of 311310013 in words is "three hundred eleven million, three hundred ten thousand, thirteen".