313649149 has 4 divisors (see below), whose sum is σ = 342162720. Its totient is φ = 285135580.

The previous prime is 313649143. The next prime is 313649249. The reversal of 313649149 is 941946313.

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 313649149 - 2⁵ = 313649117 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313649143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14256769 + ... + 14256790.

It is an arithmetic number, because the mean of its divisors is an integer number (85540680).

Almost surely, 2^313649149 is an apocalyptic number.

It is an amenable number.

313649149 is a deficient number, since it is larger than the sum of its proper divisors (28513571).

313649149 is a wasteful number, since it uses less digits than its factorization.

313649149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28513570.

The product of its digits is 69984, while the sum is 40.

The square root of 313649149 is about 17710.1425460102. The cubic root of 313649149 is about 679.4351920443.

The spelling of 313649149 in words is "three hundred thirteen million, six hundred forty-nine thousand, one hundred forty-nine".