31973673 has 8 divisors (see below), whose sum is σ = 43268128. Its totient is φ = 20997504.

The previous prime is 31973663. The next prime is 31973707. The reversal of 31973673 is 37637913.

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

It is not a de Polignac number, because 31973673 - 2¹² = 31969577 is a prime.

It is a super-2 number, since 2×31973673² = 2044631530221858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31973603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79336 + ... + 79737.

It is an arithmetic number, because the mean of its divisors is an integer number (5408516).

Almost surely, 2^31973673 is an apocalyptic number.

It is an amenable number.

31973673 is a deficient number, since it is larger than the sum of its proper divisors (11294455).

31973673 is a wasteful number, since it uses less digits than its factorization.

31973673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159143.

The product of its digits is 71442, while the sum is 39.

The square root of 31973673 is about 5654.5267706502. The cubic root of 31973673 is about 317.3931208653.

The spelling of 31973673 in words is "thirty-one million, nine hundred seventy-three thousand, six hundred seventy-three".