315939291 has 8 divisors (see below), whose sum is σ = 421640784. Its totient is φ = 210432000.

The previous prime is 315939287. The next prime is 315939319. The reversal of 315939291 is 192939513.

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

It is not a de Polignac number, because 315939291 - 2² = 315939287 is a prime.

It is not an unprimeable number, because it can be changed into a prime (315939241) 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 7 ways as a sum of consecutive naturals, for example, 44710 + ... + 51291.

It is an arithmetic number, because the mean of its divisors is an integer number (52705098).

Almost surely, 2^315939291 is an apocalyptic number.

315939291 is a deficient number, since it is larger than the sum of its proper divisors (105701493).

315939291 is a wasteful number, since it uses less digits than its factorization.

315939291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97101.

The product of its digits is 65610, while the sum is 42.

The square root of 315939291 is about 17774.6811785753. The cubic root of 315939291 is about 681.0848391697.

The spelling of 315939291 in words is "three hundred fifteen million, nine hundred thirty-nine thousand, two hundred ninety-one".