30113131020 has 48 divisors (see below), whose sum is σ = 96362020608. Its totient is φ = 6883001280.

The previous prime is 30113130979. The next prime is 30113131021. The reversal of 30113131020 is 2013131103.

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

It is not an unprimeable number, because it can be changed into a prime (30113131021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35848546 + ... + 35849385.

It is an arithmetic number, because the mean of its divisors is an integer number (2007542096).

Almost surely, 2^30113131020 is an apocalyptic number.

30113131020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30113131020 is an abundant number, since it is smaller than the sum of its proper divisors (66248889588).

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

30113131020 is a wasteful number, since it uses less digits than its factorization.

30113131020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71697950 (or 71697948 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 30113131020 its reverse (2013131103), we get a palindrome (32126262123).

The spelling of 30113131020 in words is "thirty billion, one hundred thirteen million, one hundred thirty-one thousand, twenty".