30131118 has 12 divisors (see below), whose sum is σ = 65284128. Its totient is φ = 10043700.

The previous prime is 30131113. The next prime is 30131137. The reversal of 30131118 is 81113103.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1673951 = 30131118 / (3 + 0 + 1 + 3 + 1 + 1 + 1 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 30131118.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30131113) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 836958 + ... + 836993.

It is an arithmetic number, because the mean of its divisors is an integer number (5440344).

Almost surely, 2^30131118 is an apocalyptic number.

30131118 is an abundant number, since it is smaller than the sum of its proper divisors (35153010).

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

30131118 is a wasteful number, since it uses less digits than its factorization.

30131118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1673959 (or 1673956 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 30131118 is about 5489.1819062589. The cubic root of 30131118 is about 311.1752750406.

The spelling of 30131118 in words is "thirty million, one hundred thirty-one thousand, one hundred eighteen".