30131814 has 16 divisors (see below), whose sum is σ = 62208000. Its totient is φ = 9719880.

The previous prime is 30131809. The next prime is 30131821. The reversal of 30131814 is 41813103.

It is a Curzon number.

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, 80814 + ... + 81185.

It is an arithmetic number, because the mean of its divisors is an integer number (3888000).

Almost surely, 2^30131814 is an apocalyptic number.

30131814 is an abundant number, since it is smaller than the sum of its proper divisors (32076186).

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

30131814 is a wasteful number, since it uses less digits than its factorization.

30131814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162035.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 30131814 is about 5489.2453033181. The cubic root of 30131814 is about 311.1776709725.

Adding to 30131814 its reverse (41813103), we get a palindrome (71944917).

The spelling of 30131814 in words is "thirty million, one hundred thirty-one thousand, eight hundred fourteen".