31330113102 has 12 divisors (see below), whose sum is σ = 67881911760. Its totient is φ = 10443371028.

The previous prime is 31330113091. The next prime is 31330113149. The reversal of 31330113102 is 20131103313.

It is a happy number.

31330113102 is a `hidden beast` number, since 313 + 30 + 11 + 310 + 2 = 666.

It is a super-2 number, since 2×31330113102² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1740561839 = 31330113102 / (3 + 1 + 3 + 3 + 0 + 1 + 1 + 3 + 1 + 0 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 870280902 + ... + 870280937.

It is an arithmetic number, because the mean of its divisors is an integer number (5656825980).

Almost surely, 2^31330113102 is an apocalyptic number.

31330113102 is an abundant number, since it is smaller than the sum of its proper divisors (36551798658).

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

31330113102 is a wasteful number, since it uses less digits than its factorization.

31330113102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1740561847 (or 1740561844 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 31330113102 its reverse (20131103313), we get a palindrome (51461216415).

The spelling of 31330113102 in words is "thirty-one billion, three hundred thirty million, one hundred thirteen thousand, one hundred two".