31223003133320 has 64 divisors (see below), whose sum is σ = 70770218929200. Its totient is φ = 12397044879360.

The previous prime is 31223003133319. The next prime is 31223003133331. The reversal of 31223003133320 is 2333130032213.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 14236389256996 + 16986613876324 = 3773114^2 + 4121482^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31223003133320.

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, 70080860 + ... + 70524980.

Almost surely, 2^{31223003133320} is an apocalyptic number.

It is an amenable number.

31223003133320 is an abundant number, since it is smaller than the sum of its proper divisors (39547215795880).

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

31223003133320 is a wasteful number, since it uses less digits than its factorization.

31223003133320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457098 (or 457094 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 26.

Adding to 31223003133320 its reverse (2333130032213), we get a palindrome (33556133165533).

The spelling of 31223003133320 in words is "thirty-one trillion, two hundred twenty-three billion, three million, one hundred thirty-three thousand, three hundred twenty".