31321333000220 has 24 divisors (see below), whose sum is σ = 66007219097904. Its totient is φ = 12484262762496.

The previous prime is 31321333000151. The next prime is 31321333000261. The reversal of 31321333000220 is 2200033312313.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2766896549 + ... + 2766907868.

It is an arithmetic number, because the mean of its divisors is an integer number (2750300795746).

Almost surely, 2^{31321333000220} is an apocalyptic number.

It is an amenable number.

31321333000220 is an abundant number, since it is smaller than the sum of its proper divisors (34685886097684).

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

31321333000220 is a wasteful number, since it uses less digits than its factorization.

31321333000220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5533804709 (or 5533804707 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 31321333000220 its reverse (2200033312313), we get a palindrome (33521366312533).

The spelling of 31321333000220 in words is "thirty-one trillion, three hundred twenty-one billion, three hundred thirty-three million, two hundred twenty", and thus it is an aban number.