315761213 has 8 divisors (see below), whose sum is σ = 342490680. Its totient is φ = 289937920.

The previous prime is 315761177. The next prime is 315761239. The reversal of 315761213 is 312167513.

It can be written as a sum of positive squares in 4 ways, for example, as 111471364 + 204289849 = 10558^2 + 14293^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 315761213 - 2⁸ = 315760957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315761813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225818 + ... + 227211.

It is an arithmetic number, because the mean of its divisors is an integer number (42811335).

Almost surely, 2^315761213 is an apocalyptic number.

It is an amenable number.

315761213 is a deficient number, since it is larger than the sum of its proper divisors (26729467).

315761213 is a wasteful number, since it uses less digits than its factorization.

315761213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453087.

The product of its digits is 3780, while the sum is 29.

The square root of 315761213 is about 17769.6711562145. The cubic root of 315761213 is about 680.9568514791.

The spelling of 315761213 in words is "three hundred fifteen million, seven hundred sixty-one thousand, two hundred thirteen".