313231021111 has 16 divisors (see below), whose sum is σ = 334336757760. Its totient is φ = 292424065920.

The previous prime is 313231021091. The next prime is 313231021157. The reversal of 313231021111 is 111120132313.

It is a cyclic number.

It is not a de Polignac number, because 313231021111 - 2²⁵ = 313197466679 is a prime.

It is a super-2 number, since 2×313231021111² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313231021171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13138560 + ... + 13162378.

It is an arithmetic number, because the mean of its divisors is an integer number (20896047360).

Almost surely, 2^313231021111 is an apocalyptic number.

313231021111 is a deficient number, since it is larger than the sum of its proper divisors (21105736649).

313231021111 is a wasteful number, since it uses less digits than its factorization.

313231021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30054.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 313231021111 its reverse (111120132313), we get a palindrome (424351153424).

The spelling of 313231021111 in words is "three hundred thirteen billion, two hundred thirty-one million, twenty-one thousand, one hundred eleven".