31983202205 has 6 divisors (see below), whose sum is σ = 38380322526. Its totient is φ = 25586241848.

The previous prime is 31983202201. The next prime is 31983202211. The reversal of 31983202205 is 50220238913.

It can be written as a sum of positive squares in only one way, i.e., 25586561764 + 6396640441 = 159958^2 + 79979^2 .

It is not a de Polignac number, because 31983202205 - 2² = 31983202201 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31983202201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 359906 + ... + 439884.

It is an arithmetic number, because the mean of its divisors is an integer number (6396720421).

Almost surely, 2^31983202205 is an apocalyptic number.

It is an amenable number.

31983202205 is a deficient number, since it is larger than the sum of its proper divisors (6397120321).

31983202205 is an frugal number, since it uses more digits than its factorization.

31983202205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159963 (or 79984 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

Multiplying 31983202205 by its product of nonzero digits (25920), we get a square (829004601153600 = 28792440²).

The spelling of 31983202205 in words is "thirty-one billion, nine hundred eighty-three million, two hundred two thousand, two hundred five".