31385134 has 16 divisors (see below), whose sum is σ = 53129520. Its totient is φ = 13773760.

The previous prime is 31385099. The next prime is 31385153. The reversal of 31385134 is 43158313.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23959 + ... + 25234.

It is an arithmetic number, because the mean of its divisors is an integer number (3320595).

Almost surely, 2^31385134 is an apocalyptic number.

31385134 is a deficient number, since it is larger than the sum of its proper divisors (21744386).

31385134 is a wasteful number, since it uses less digits than its factorization.

31385134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49235.

The product of its digits is 4320, while the sum is 28.

The square root of 31385134 is about 5602.2436576786. The cubic root of 31385134 is about 315.4336313908.

The spelling of 31385134 in words is "thirty-one million, three hundred eighty-five thousand, one hundred thirty-four".