31313312311 has 8 divisors (see below), whose sum is σ = 32966179200. Its totient is φ = 29660925240.

The previous prime is 31313312291. The next prime is 31313312321. The reversal of 31313312311 is 11321331313.

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

It is a cyclic number.

It is not a de Polignac number, because 31313312311 - 2¹³ = 31313304119 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 (31313312321) 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, 18096 + ... + 250906.

It is an arithmetic number, because the mean of its divisors is an integer number (4120772400).

Almost surely, 2^31313312311 is an apocalyptic number.

31313312311 is a deficient number, since it is larger than the sum of its proper divisors (1652866889).

31313312311 is a wasteful number, since it uses less digits than its factorization.

31313312311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239909.

The product of its digits is 486, while the sum is 22.

Adding to 31313312311 its reverse (11321331313), we get a palindrome (42634643624).

The spelling of 31313312311 in words is "thirty-one billion, three hundred thirteen million, three hundred twelve thousand, three hundred eleven".