31954138 has 8 divisors (see below), whose sum is σ = 48208788. Its totient is φ = 15884544.

The previous prime is 31954127. The next prime is 31954147. The reversal of 31954138 is 83145913.

It can be written as a sum of positive squares in 2 ways, for example, as 29019769 + 2934369 = 5387^2 + 1713^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45831 + ... + 46522.

Almost surely, 2^31954138 is an apocalyptic number.

31954138 is a deficient number, since it is larger than the sum of its proper divisors (16254650).

31954138 is a wasteful number, since it uses less digits than its factorization.

31954138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92528.

The product of its digits is 12960, while the sum is 34.

The square root of 31954138 is about 5652.7991296348. The cubic root of 31954138 is about 317.3284683226.

The spelling of 31954138 in words is "thirty-one million, nine hundred fifty-four thousand, one hundred thirty-eight".