31343243222120 has 64 divisors (see below), whose sum is σ = 70822649376000. Its totient is φ = 12483909184768.

The previous prime is 31343243222009. The next prime is 31343243222167. The reversal of 31343243222120 is 2122234234313.

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, 136047986 + ... + 136278174.

It is an arithmetic number, because the mean of its divisors is an integer number (1106603896500).

Almost surely, 2^{31343243222120} is an apocalyptic number.

It is an amenable number.

31343243222120 is an abundant number, since it is smaller than the sum of its proper divisors (39479406153880).

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

31343243222120 is a wasteful number, since it uses less digits than its factorization.

31343243222120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244682 (or 244678 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 32.

Adding to 31343243222120 its reverse (2122234234313), we get a palindrome (33465477456433).

The spelling of 31343243222120 in words is "thirty-one trillion, three hundred forty-three billion, two hundred forty-three million, two hundred twenty-two thousand, one hundred twenty".