31310030222220 has 48 divisors (see below), whose sum is σ = 92825030779488. Its totient is φ = 7858203663360.

The previous prime is 31310030222209. The next prime is 31310030222239. The reversal of 31310030222220 is 2222203001313.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15348053011 + ... + 15348055050.

It is an arithmetic number, because the mean of its divisors is an integer number (1933854807906).

Almost surely, 2^{31310030222220} is an apocalyptic number.

31310030222220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31310030222220 is an abundant number, since it is smaller than the sum of its proper divisors (61515000557268).

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

31310030222220 is a wasteful number, since it uses less digits than its factorization.

31310030222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30696108090 (or 30696108088 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 31310030222220 its reverse (2222203001313), we get a palindrome (33532233223533).

The spelling of 31310030222220 in words is "thirty-one trillion, three hundred ten billion, thirty million, two hundred twenty-two thousand, two hundred twenty".