391134117 has 16 divisors (see below), whose sum is σ = 579659328. Its totient is φ = 232577280.

The previous prime is 391134103. The next prime is 391134131. The reversal of 391134117 is 711431193.

It is an interprime number because it is at equal distance from previous prime (391134103) and next prime (391134131).

It is not a de Polignac number, because 391134117 - 2⁷ = 391133989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (391134217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110068 + ... + 113565.

It is an arithmetic number, because the mean of its divisors is an integer number (36228708).

Almost surely, 2^391134117 is an apocalyptic number.

It is an amenable number.

391134117 is a deficient number, since it is larger than the sum of its proper divisors (188525211).

391134117 is a wasteful number, since it uses less digits than its factorization.

391134117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223700.

The product of its digits is 2268, while the sum is 30.

The square root of 391134117 is about 19777.1109366358. The cubic root of 391134117 is about 731.3218790035.

The spelling of 391134117 in words is "three hundred ninety-one million, one hundred thirty-four thousand, one hundred seventeen".