31300122220 has 48 divisors (see below), whose sum is σ = 69623372448. Its totient is φ = 11779066880.

The previous prime is 31300122199. The next prime is 31300122223. The reversal of 31300122220 is 2222100313.

It is a junction number, because it is equal to n+sod(n) for n = 31300122194 and 31300122203.

It is not an unprimeable number, because it can be changed into a prime (31300122223) by changing a digit.

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, 950430 + ... + 982810.

It is an arithmetic number, because the mean of its divisors is an integer number (1450486926).

Almost surely, 2^31300122220 is an apocalyptic number.

It is an amenable number.

31300122220 is an abundant number, since it is smaller than the sum of its proper divisors (38323250228).

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

31300122220 is a wasteful number, since it uses less digits than its factorization.

31300122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35250 (or 35248 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 31300122220 its reverse (2222100313), we get a palindrome (33522222533).

The spelling of 31300122220 in words is "thirty-one billion, three hundred million, one hundred twenty-two thousand, two hundred twenty".