315231601 has 4 divisors (see below), whose sum is σ = 323751412. Its totient is φ = 306711792.

The previous prime is 315231599. The next prime is 315231611. The reversal of 315231601 is 106132513.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 185613376 + 129618225 = 13624^2 + 11385^2 .

It is a cyclic number.

It is not a de Polignac number, because 315231601 - 2¹ = 315231599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315231611) 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 3 ways as a sum of consecutive naturals, for example, 4259850 + ... + 4259923.

It is an arithmetic number, because the mean of its divisors is an integer number (80937853).

Almost surely, 2^315231601 is an apocalyptic number.

It is an amenable number.

315231601 is a deficient number, since it is larger than the sum of its proper divisors (8519811).

315231601 is an equidigital number, since it uses as much as digits as its factorization.

315231601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8519810.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 315231601 is about 17754.7627694655. The cubic root of 315231601 is about 680.5759257212.

It can be divided in two parts, 31523 and 1601, that added together give a square (33124 = 182²).

The spelling of 315231601 in words is "three hundred fifteen million, two hundred thirty-one thousand, six hundred one".