31989954 has 64 divisors (see below), whose sum is σ = 71442432. Its totient is φ = 9504000.

The previous prime is 31989917. The next prime is 31989959. The reversal of 31989954 is 45998913.

It is not an unprimeable number, because it can be changed into a prime (31989959) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 211779 + ... + 211929.

It is an arithmetic number, because the mean of its divisors is an integer number (1116288).

Almost surely, 2^31989954 is an apocalyptic number.

31989954 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

31989954 is an abundant number, since it is smaller than the sum of its proper divisors (39452478).

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

31989954 is a wasteful number, since it uses less digits than its factorization.

31989954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271.

The product of its digits is 349920, while the sum is 48.

The square root of 31989954 is about 5655.9662304508. The cubic root of 31989954 is about 317.4469839352.

The spelling of 31989954 in words is "thirty-one million, nine hundred eighty-nine thousand, nine hundred fifty-four".