31132320222120 has 128 divisors (see below), whose sum is σ = 102721371056640. Its totient is φ = 7500290549760.

The previous prime is 31132320222071. The next prime is 31132320222127. The reversal of 31132320222120 is 2122202323113.

It is a super-2 number, since 2×31132320222120² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (31132320222127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 212231101 + ... + 212377740.

It is an arithmetic number, because the mean of its divisors is an integer number (802510711380).

Almost surely, 2^{31132320222120} is an apocalyptic number.

31132320222120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31132320222120 is an abundant number, since it is smaller than the sum of its proper divisors (71589050834520).

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

31132320222120 is a wasteful number, since it uses less digits than its factorization.

31132320222120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424608915 (or 424608911 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 31132320222120 its reverse (2122202323113), we get a palindrome (33254522545233).

The spelling of 31132320222120 in words is "thirty-one trillion, one hundred thirty-two billion, three hundred twenty million, two hundred twenty-two thousand, one hundred twenty".