30120313020 has 96 divisors (see below), whose sum is σ = 98018726400. Its totient is φ = 6767948544.

The previous prime is 30120313019. The next prime is 30120313033. The reversal of 30120313020 is 2031302103.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 582975 + ... + 632534.

It is an arithmetic number, because the mean of its divisors is an integer number (1021028400).

Almost surely, 2^30120313020 is an apocalyptic number.

30120313020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30120313020 is an abundant number, since it is smaller than the sum of its proper divisors (67898413380).

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

30120313020 is a wasteful number, since it uses less digits than its factorization.

30120313020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215587 (or 1215585 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 30120313020 its reverse (2031302103), we get a palindrome (32151615123).

The spelling of 30120313020 in words is "thirty billion, one hundred twenty million, three hundred thirteen thousand, twenty".