31318134 has 16 divisors (see below), whose sum is σ = 65359872. Its totient is φ = 9985448.

The previous prime is 31318129. The next prime is 31318159. The reversal of 31318134 is 43181313.

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, 113334 + ... + 113609.

It is an arithmetic number, because the mean of its divisors is an integer number (4084992).

Almost surely, 2^31318134 is an apocalyptic number.

31318134 is an abundant number, since it is smaller than the sum of its proper divisors (34041738).

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

31318134 is a wasteful number, since it uses less digits than its factorization.

31318134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226971.

The product of its digits is 864, while the sum is 24.

The square root of 31318134 is about 5596.2607158709. The cubic root of 31318134 is about 315.2090122029.

Adding to 31318134 its reverse (43181313), we get a palindrome (74499447).

The spelling of 31318134 in words is "thirty-one million, three hundred eighteen thousand, one hundred thirty-four".