31130302220 has 48 divisors (see below), whose sum is σ = 65810192448. Its totient is φ = 12369127680.

The previous prime is 31130302211. The next prime is 31130302319. The reversal of 31130302220 is 2220303113.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3496094 + ... + 3504986.

It is an arithmetic number, because the mean of its divisors is an integer number (1371045676).

Almost surely, 2^31130302220 is an apocalyptic number.

It is an amenable number.

31130302220 is an abundant number, since it is smaller than the sum of its proper divisors (34679890228).

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

31130302220 is a wasteful number, since it uses less digits than its factorization.

31130302220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10050 (or 10048 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 31130302220 its reverse (2220303113), we get a palindrome (33350605333).

The spelling of 31130302220 in words is "thirty-one billion, one hundred thirty million, three hundred two thousand, two hundred twenty".