30131200220 has 24 divisors (see below), whose sum is σ = 69027841008. Its totient is φ = 10956800000.

The previous prime is 30131200219. The next prime is 30131200223. The reversal of 30131200220 is 2200213103.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 30131200195 and 30131200204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30131200223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68479781 + ... + 68480220.

It is an arithmetic number, because the mean of its divisors is an integer number (2876160042).

Almost surely, 2^30131200220 is an apocalyptic number.

It is an amenable number.

30131200220 is an abundant number, since it is smaller than the sum of its proper divisors (38896640788).

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

30131200220 is a wasteful number, since it uses less digits than its factorization.

30131200220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136960021 (or 136960019 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 30131200220 its reverse (2200213103), we get a palindrome (32331413323).

The spelling of 30131200220 in words is "thirty billion, one hundred thirty-one million, two hundred thousand, two hundred twenty".