31993083 has 16 divisors (see below), whose sum is σ = 47499040. Its totient is φ = 21282912.

The previous prime is 31993081. The next prime is 31993109. The reversal of 31993083 is 38039913.

It is not a de Polignac number, because 31993083 - 2¹ = 31993081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31993081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15585 + ... + 17517.

It is an arithmetic number, because the mean of its divisors is an integer number (2968690).

Almost surely, 2^31993083 is an apocalyptic number.

31993083 is a deficient number, since it is larger than the sum of its proper divisors (15505957).

31993083 is a wasteful number, since it uses less digits than its factorization.

31993083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2555 (or 2549 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 31993083 is about 5656.2428342496. The cubic root of 31993083 is about 317.4573336347.

The spelling of 31993083 in words is "thirty-one million, nine hundred ninety-three thousand, eighty-three".