31311113202 has 48 divisors (see below), whose sum is σ = 68055519168. Its totient is φ = 10404050400.

The previous prime is 31311113191. The next prime is 31311113203. The reversal of 31311113202 is 20231111313.

31311113202 is a `hidden beast` number, since 31 + 311 + 1 + 1 + 320 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (31311113203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10981077 + ... + 10983927.

It is an arithmetic number, because the mean of its divisors is an integer number (1417823316).

Almost surely, 2^31311113202 is an apocalyptic number.

31311113202 is an abundant number, since it is smaller than the sum of its proper divisors (36744405966).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31311113202 is a wasteful number, since it uses less digits than its factorization.

31311113202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4575 (or 4572 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 31311113202 its reverse (20231111313), we get a palindrome (51542224515).

It can be divided in two parts, 3131111 and 3202, that added together give a palindrome (3134313).

The spelling of 31311113202 in words is "thirty-one billion, three hundred eleven million, one hundred thirteen thousand, two hundred two".