31444973 has 8 divisors (see below), whose sum is σ = 36286848. Its totient is φ = 26690544.

The previous prime is 31444939. The next prime is 31444993. The reversal of 31444973 is 37944413.

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

It is a cyclic number.

It is not a de Polignac number, because 31444973 - 2⁸ = 31444717 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 (31444993) 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, 21086 + ... + 22527.

It is an arithmetic number, because the mean of its divisors is an integer number (4535856).

Almost surely, 2^31444973 is an apocalyptic number.

It is an amenable number.

31444973 is a deficient number, since it is larger than the sum of its proper divisors (4841875).

31444973 is a wasteful number, since it uses less digits than its factorization.

31444973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43723.

The product of its digits is 36288, while the sum is 35.

The square root of 31444973 is about 5607.5817426053. The cubic root of 31444973 is about 315.6339730547.

The spelling of 31444973 in words is "thirty-one million, four hundred forty-four thousand, nine hundred seventy-three".