31113332202313 has 4 divisors (see below), whose sum is σ = 31190921559828. Its totient is φ = 31035742844800.

The previous prime is 31113332202179. The next prime is 31113332202343. The reversal of 31113332202313 is 31320223331113.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30957506218809 + 155825983504 = 5563947^2 + 394748^2 .

It is a cyclic number.

It is not a de Polignac number, because 31113332202313 - 2⁹ = 31113332201801 is a prime.

It is a super-2 number, since 2×31113332202313² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31113332202343) 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, 38794678156 + ... + 38794678957.

It is an arithmetic number, because the mean of its divisors is an integer number (7797730389957).

Almost surely, 2^{31113332202313} is an apocalyptic number.

It is an amenable number.

31113332202313 is a deficient number, since it is larger than the sum of its proper divisors (77589357515).

31113332202313 is an equidigital number, since it uses as much as digits as its factorization.

31113332202313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77589357514.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 31113332202313 its reverse (31320223331113), we get a palindrome (62433555533426).

The spelling of 31113332202313 in words is "thirty-one trillion, one hundred thirteen billion, three hundred thirty-two million, two hundred two thousand, three hundred thirteen".