315511345 has 8 divisors (see below), whose sum is σ = 380803176. Its totient is φ = 250949376.

The previous prime is 315511297. The next prime is 315511349. The reversal of 315511345 is 543115513.

It can be written as a sum of positive squares in 4 ways, for example, as 101445184 + 214066161 = 10072^2 + 14631^2 .

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 315511345 - 2¹¹ = 315509297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315511349) 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, 181512 + ... + 183241.

It is an arithmetic number, because the mean of its divisors is an integer number (47600397).

Almost surely, 2^315511345 is an apocalyptic number.

It is an amenable number.

315511345 is a deficient number, since it is larger than the sum of its proper divisors (65291831).

315511345 is a wasteful number, since it uses less digits than its factorization.

315511345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364931.

The product of its digits is 4500, while the sum is 28.

The square root of 315511345 is about 17762.6390212716. The cubic root of 315511345 is about 680.7771859385. Note that the first 3 decimals are identical.

Adding to 315511345 its reverse (543115513), we get a palindrome (858626858).

It can be divided in two parts, 31551 and 1345, that added together give a triangular number (32896 = T₂₅₆).

The spelling of 315511345 in words is "three hundred fifteen million, five hundred eleven thousand, three hundred forty-five".