31020221120130 has 96 divisors (see below), whose sum is σ = 88011066274560. Its totient is φ = 7517793853440.

The previous prime is 31020221120113. The next prime is 31020221120143. The reversal of 31020221120130 is 3102112202013.

31020221120130 is a `hidden beast` number, since 310 + 2 + 0 + 221 + 1 + 2 + 0 + 130 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1410442 + ... + 8001861.

It is an arithmetic number, because the mean of its divisors is an integer number (916781940360).

Almost surely, 2^{31020221120130} is an apocalyptic number.

31020221120130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31020221120130 is an abundant number, since it is smaller than the sum of its proper divisors (56990845154430).

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

31020221120130 is a wasteful number, since it uses less digits than its factorization.

31020221120130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9415656 (or 9415653 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 31020221120130 its reverse (3102112202013), we get a palindrome (34122333322143).

The spelling of 31020221120130 in words is "thirty-one trillion, twenty billion, two hundred twenty-one million, one hundred twenty thousand, one hundred thirty".