315784149 has 4 divisors (see below), whose sum is σ = 421045536. Its totient is φ = 210522764.

The previous prime is 315784121. The next prime is 315784169. The reversal of 315784149 is 941487513.

It is a happy number.

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 315784149 - 2¹⁷ = 315653077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 315784149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315784169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52630689 + ... + 52630694.

It is an arithmetic number, because the mean of its divisors is an integer number (105261384).

Almost surely, 2^315784149 is an apocalyptic number.

It is an amenable number.

315784149 is a deficient number, since it is larger than the sum of its proper divisors (105261387).

315784149 is a wasteful number, since it uses less digits than its factorization.

315784149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105261386.

The product of its digits is 120960, while the sum is 42.

The square root of 315784149 is about 17770.3165137822. The cubic root of 315784149 is about 680.9733386721.

The spelling of 315784149 in words is "three hundred fifteen million, seven hundred eighty-four thousand, one hundred forty-nine".