311111013 has 8 divisors (see below), whose sum is σ = 414900000. Its totient is φ = 207364688.

The previous prime is 311110967. The next prime is 311111023. The reversal of 311111013 is 310111113.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311111013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 311111013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311111023) 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, 15583 + ... + 29411.

It is an arithmetic number, because the mean of its divisors is an integer number (51862500).

Almost surely, 2^311111013 is an apocalyptic number.

It is an amenable number.

311111013 is a deficient number, since it is larger than the sum of its proper divisors (103788987).

311111013 is a wasteful number, since it uses less digits than its factorization.

311111013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21331.

The product of its (nonzero) digits is 9, while the sum is 12.

The square root of 311111013 is about 17638.3392925751. The cubic root of 311111013 is about 677.5974999815.

Adding to 311111013 its reverse (310111113), we get a palindrome (621222126).

The spelling of 311111013 in words is "three hundred eleven million, one hundred eleven thousand, thirteen".