318912349 has 4 divisors (see below), whose sum is σ = 364471264. Its totient is φ = 273353436.

The previous prime is 318912313. The next prime is 318912353. The reversal of 318912349 is 943219813.

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 318912349 - 2¹¹ = 318910301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318912379) 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, 22779447 + ... + 22779460.

It is an arithmetic number, because the mean of its divisors is an integer number (91117816).

Almost surely, 2^318912349 is an apocalyptic number.

It is an amenable number.

318912349 is a deficient number, since it is larger than the sum of its proper divisors (45558915).

318912349 is an equidigital number, since it uses as much as digits as its factorization.

318912349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45558914.

The product of its digits is 46656, while the sum is 40.

The square root of 318912349 is about 17858.1171739912. The cubic root of 318912349 is about 683.2145585881.

The spelling of 318912349 in words is "three hundred eighteen million, nine hundred twelve thousand, three hundred forty-nine".