31054239 has 16 divisors (see below), whose sum is σ = 46101600. Its totient is φ = 20659968.

The previous prime is 31054181. The next prime is 31054241. The reversal of 31054239 is 93245013.

It is not a de Polignac number, because 31054239 - 2⁹ = 31053727 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31054249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17317 + ... + 19025.

It is an arithmetic number, because the mean of its divisors is an integer number (2881350).

Almost surely, 2^31054239 is an apocalyptic number.

31054239 is a deficient number, since it is larger than the sum of its proper divisors (15047361).

31054239 is a wasteful number, since it uses less digits than its factorization.

31054239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2391 (or 2385 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 31054239 is about 5572.6330401346. The cubic root of 31054239 is about 314.3211685406.

The spelling of 31054239 in words is "thirty-one million, fifty-four thousand, two hundred thirty-nine".