315047651 has 4 divisors (see below), whose sum is σ = 315157152. Its totient is φ = 314938152.

The previous prime is 315047641. The next prime is 315047657. The reversal of 315047651 is 156740513.

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

It is a cyclic number.

It is not a de Polignac number, because 315047651 - 2¹⁸ = 314785507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315047657) 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 3 ways as a sum of consecutive naturals, for example, 50315 + ... + 56228.

It is an arithmetic number, because the mean of its divisors is an integer number (78789288).

Almost surely, 2^315047651 is an apocalyptic number.

315047651 is a deficient number, since it is larger than the sum of its proper divisors (109501).

315047651 is a wasteful number, since it uses less digits than its factorization.

315047651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109500.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 315047651 is about 17749.5817133813. The cubic root of 315047651 is about 680.4435190500.

The spelling of 315047651 in words is "three hundred fifteen million, forty-seven thousand, six hundred fifty-one".