31373982 has 12 divisors (see below), whose sum is σ = 67977000. Its totient is φ = 10457988.

The previous prime is 31373963. The next prime is 31373983. The reversal of 31373982 is 28937313.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31373983) 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 5 ways as a sum of consecutive naturals, for example, 871482 + ... + 871517.

It is an arithmetic number, because the mean of its divisors is an integer number (5664750).

Almost surely, 2^31373982 is an apocalyptic number.

31373982 is an abundant number, since it is smaller than the sum of its proper divisors (36603018).

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

31373982 is a wasteful number, since it uses less digits than its factorization.

31373982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1743007 (or 1743004 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 31373982 is about 5601.2482537377. The cubic root of 31373982 is about 315.3962662210.

The spelling of 31373982 in words is "thirty-one million, three hundred seventy-three thousand, nine hundred eighty-two".