31893389 has 8 divisors (see below), whose sum is σ = 35915520. Its totient is φ = 28058400.

The previous prime is 31893373. The next prime is 31893403. The reversal of 31893389 is 98339813.

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 31893389 - 2⁴ = 31893373 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 (31893349) 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, 46424 + ... + 47105.

It is an arithmetic number, because the mean of its divisors is an integer number (4489440).

Almost surely, 2^31893389 is an apocalyptic number.

It is an amenable number.

31893389 is a deficient number, since it is larger than the sum of its proper divisors (4022131).

31893389 is a wasteful number, since it uses less digits than its factorization.

31893389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93571.

The product of its digits is 139968, while the sum is 44.

The square root of 31893389 is about 5647.4232177162. The cubic root of 31893389 is about 317.1272464305.

The spelling of 31893389 in words is "thirty-one million, eight hundred ninety-three thousand, three hundred eighty-nine".