315216139 has 8 divisors (see below), whose sum is σ = 361478880. Its totient is φ = 269261376.

The previous prime is 315216131. The next prime is 315216149. The reversal of 315216139 is 931612513.

It is a happy number.

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 315216139 - 2³ = 315216131 is a prime.

It is a super-2 number, since 2×315216139² = 198722428572134642, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 315216139.

It is not an unprimeable number, because it can be changed into a prime (315216131) 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, 74794 + ... + 78895.

It is an arithmetic number, because the mean of its divisors is an integer number (45184860).

Almost surely, 2^315216139 is an apocalyptic number.

315216139 is a deficient number, since it is larger than the sum of its proper divisors (46262741).

315216139 is a wasteful number, since it uses less digits than its factorization.

315216139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153989.

The product of its digits is 4860, while the sum is 31.

The square root of 315216139 is about 17754.3273316676. The cubic root of 315216139 is about 680.5647982021.

It can be divided in two parts, 3152 and 16139, that added together give a palindrome (19291).

The spelling of 315216139 in words is "three hundred fifteen million, two hundred sixteen thousand, one hundred thirty-nine".