31112102130 has 16 divisors (see below), whose sum is σ = 74669045184. Its totient is φ = 8296560560.

The previous prime is 31112102123. The next prime is 31112102143. The reversal of 31112102130 is 3120121113.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 518535006 + ... + 518535065.

It is an arithmetic number, because the mean of its divisors is an integer number (4666815324).

Almost surely, 2^31112102130 is an apocalyptic number.

31112102130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31112102130 is an abundant number, since it is smaller than the sum of its proper divisors (43556943054).

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

31112102130 is a wasteful number, since it uses less digits than its factorization.

31112102130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037070081.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 31112102130 its reverse (3120121113), we get a palindrome (34232223243).

The spelling of 31112102130 in words is "thirty-one billion, one hundred twelve million, one hundred two thousand, one hundred thirty".