31320223000 has 64 divisors (see below), whose sum is σ = 79952015520. Its totient is φ = 11389168000.

The previous prime is 31320222961. The next prime is 31320223007. The reversal of 31320223000 is 32202313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31320223007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1412647 + ... + 1434646.

Almost surely, 2^31320223000 is an apocalyptic number.

It is an amenable number.

31320223000 is an abundant number, since it is smaller than the sum of its proper divisors (48631792520).

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

31320223000 is a wasteful number, since it uses less digits than its factorization.

31320223000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2847325 (or 2847311 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 31320223000 its reverse (32202313), we get a palindrome (31352425313).

The spelling of 31320223000 in words is "thirty-one billion, three hundred twenty million, two hundred twenty-three thousand".