31113302220311 has 16 divisors (see below), whose sum is σ = 31655512800000. Its totient is φ = 30571590626496.

The previous prime is 31113302220277. The next prime is 31113302220313. The reversal of 31113302220311 is 11302220331113.

It is a cyclic number.

It is not a de Polignac number, because 31113302220311 - 2¹⁴ = 31113302203927 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 (31113302220313) 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, 1868770715 + ... + 1868787363.

It is an arithmetic number, because the mean of its divisors is an integer number (1978469550000).

Almost surely, 2^{31113302220311} is an apocalyptic number.

31113302220311 is a deficient number, since it is larger than the sum of its proper divisors (542210579689).

31113302220311 is a wasteful number, since it uses less digits than its factorization.

31113302220311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29686.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 31113302220311 its reverse (11302220331113), we get a palindrome (42415522551424).

The spelling of 31113302220311 in words is "thirty-one trillion, one hundred thirteen billion, three hundred two million, two hundred twenty thousand, three hundred eleven".