311011300213 has 4 divisors (see below), whose sum is σ = 311013839500. Its totient is φ = 311008760928.

The previous prime is 311011300169. The next prime is 311011300231. The reversal of 311011300213 is 312003110113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 312003110113 = 59 ⋅5288188307.

It can be written as a sum of positive squares in 2 ways, for example, as 152656648369 + 158354651844 = 390713^2 + 397938^2 .

It is a cyclic number.

It is not a de Polignac number, because 311011300213 - 2²¹ = 311009203061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311011300513) 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, 1076088 + ... + 1334161.

It is an arithmetic number, because the mean of its divisors is an integer number (77753459875).

Almost surely, 2^311011300213 is an apocalyptic number.

It is an amenable number.

311011300213 is a deficient number, since it is larger than the sum of its proper divisors (2539287).

311011300213 is a wasteful number, since it uses less digits than its factorization.

311011300213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2539286.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 311011300213 its reverse (312003110113), we get a palindrome (623014410326).

The spelling of 311011300213 in words is "three hundred eleven billion, eleven million, three hundred thousand, two hundred thirteen".