347991113 has 4 divisors (see below), whose sum is σ = 349813248. Its totient is φ = 346168980.

The previous prime is 347991103. The next prime is 347991167. The reversal of 347991113 is 311199743.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 347991113 - 2²⁸ = 79555657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (347991103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 910781 + ... + 911162.

It is an arithmetic number, because the mean of its divisors is an integer number (87453312).

Almost surely, 2^347991113 is an apocalyptic number.

It is an amenable number.

347991113 is a deficient number, since it is larger than the sum of its proper divisors (1822135).

347991113 is a wasteful number, since it uses less digits than its factorization.

347991113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1822134.

The product of its digits is 20412, while the sum is 38.

The square root of 347991113 is about 18654.5199080545. The cubic root of 347991113 is about 703.3789780180.

The spelling of 347991113 in words is "three hundred forty-seven million, nine hundred ninety-one thousand, one hundred thirteen".