311012013 has 16 divisors (see below), whose sum is σ = 451604160. Its totient is φ = 189239424.

The previous prime is 311011927. The next prime is 311012017. The reversal of 311012013 is 310210113.

It is not a de Polignac number, because 311012013 - 2¹⁸ = 310749869 is a prime.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 311012013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311012017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41331 + ... + 48272.

It is an arithmetic number, because the mean of its divisors is an integer number (28225260).

Almost surely, 2^311012013 is an apocalyptic number.

It is an amenable number.

311012013 is a deficient number, since it is larger than the sum of its proper divisors (140592147).

311012013 is a wasteful number, since it uses less digits than its factorization.

311012013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89708.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 311012013 is about 17635.5326826269. The cubic root of 311012013 is about 677.5256185989.

Adding to 311012013 its reverse (310210113), we get a palindrome (621222126).

The spelling of 311012013 in words is "three hundred eleven million, twelve thousand, thirteen".