31989254 has 32 divisors (see below), whose sum is σ = 53916192. Its totient is φ = 14229600.

The previous prime is 31989229. The next prime is 31989259. The reversal of 31989254 is 45298913.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31989259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162284 + ... + 162480.

It is an arithmetic number, because the mean of its divisors is an integer number (1684881).

Almost surely, 2^31989254 is an apocalyptic number.

31989254 is a deficient number, since it is larger than the sum of its proper divisors (21926938).

31989254 is a wasteful number, since it uses less digits than its factorization.

31989254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293 (or 271 counting only the distinct ones).

The product of its digits is 77760, while the sum is 41.

The square root of 31989254 is about 5655.9043485547. The cubic root of 31989254 is about 317.4446684738. Note that the first 3 decimals are identical.

The spelling of 31989254 in words is "thirty-one million, nine hundred eighty-nine thousand, two hundred fifty-four".