31078134 has 32 divisors (see below), whose sum is σ = 69245280. Its totient is φ = 10332000.

The previous prime is 31078093. The next prime is 31078141. The reversal of 31078134 is 43187013.

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

It is a junction number, because it is equal to n+sod(n) for n = 31078098 and 31078107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37444 + ... + 38264.

It is an arithmetic number, because the mean of its divisors is an integer number (2163915).

Almost surely, 2^31078134 is an apocalyptic number.

31078134 is an abundant number, since it is smaller than the sum of its proper divisors (38167146).

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

31078134 is a wasteful number, since it uses less digits than its factorization.

31078134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1533 (or 1527 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 31078134 is about 5574.7765874517. The cubic root of 31078134 is about 314.4017670782.

The spelling of 31078134 in words is "thirty-one million, seventy-eight thousand, one hundred thirty-four".