315440401 has 4 divisors (see below), whose sum is σ = 316818100. Its totient is φ = 314062704.

The previous prime is 315440383. The next prime is 315440417. The reversal of 315440401 is 104044513.

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 292410000 + 23030401 = 17100^2 + 4799^2 .

It is a cyclic number.

It is not a de Polignac number, because 315440401 - 2¹⁷ = 315309329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315440431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 688506 + ... + 688963.

It is an arithmetic number, because the mean of its divisors is an integer number (79204525).

Almost surely, 2^315440401 is an apocalyptic number.

It is an amenable number.

315440401 is a deficient number, since it is larger than the sum of its proper divisors (1377699).

315440401 is a wasteful number, since it uses less digits than its factorization.

315440401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1377698.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 315440401 is about 17760.6419084446. The cubic root of 315440401 is about 680.7261569472.

Adding to 315440401 its reverse (104044513), we get a palindrome (419484914).

The spelling of 315440401 in words is "three hundred fifteen million, four hundred forty thousand, four hundred one".