315043661 has 8 divisors (see below), whose sum is σ = 318306240. Its totient is φ = 311789632.

The previous prime is 315043621. The next prime is 315043721. The reversal of 315043661 is 166340513.

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 315043661 - 2¹⁸ = 314781517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315043621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93146 + ... + 96468.

It is an arithmetic number, because the mean of its divisors is an integer number (39788280).

Almost surely, 2^315043661 is an apocalyptic number.

It is an amenable number.

315043661 is a deficient number, since it is larger than the sum of its proper divisors (3262579).

315043661 is a wasteful number, since it uses less digits than its factorization.

315043661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4275.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 315043661 is about 17749.4693160105. The cubic root of 315043661 is about 680.4406464886.

The spelling of 315043661 in words is "three hundred fifteen million, forty-three thousand, six hundred sixty-one".