31973142 has 8 divisors (see below), whose sum is σ = 63946296. Its totient is φ = 10657712.

The previous prime is 31973119. The next prime is 31973191. The reversal of 31973142 is 24137913.

It is a sphenic number, since it is the product of 3 distinct primes.

31973142 is an admirable number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2664423 + ... + 2664434.

It is an arithmetic number, because the mean of its divisors is an integer number (7993287).

Almost surely, 2^31973142 is an apocalyptic number.

31973142 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

31973142 is a wasteful number, since it uses less digits than its factorization.

31973142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5328862.

The product of its digits is 4536, while the sum is 30.

The square root of 31973142 is about 5654.4798169239. The cubic root of 31973142 is about 317.3913638293.

The spelling of 31973142 in words is "thirty-one million, nine hundred seventy-three thousand, one hundred forty-two".