315204101 has 2 divisors, whose sum is σ = 315204102. Its totient is φ = 315204100.

The previous prime is 315204059. The next prime is 315204107. The reversal of 315204101 is 101402513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 313644100 + 1560001 = 17710^2 + 1249^2 .

It is an emirp because it is prime and its reverse (101402513) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315204101 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 315204101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315204107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157602050 + 157602051.

It is an arithmetic number, because the mean of its divisors is an integer number (157602051).

Almost surely, 2^315204101 is an apocalyptic number.

It is an amenable number.

315204101 is a deficient number, since it is larger than the sum of its proper divisors (1).

315204101 is an equidigital number, since it uses as much as digits as its factorization.

315204101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 315204101 is about 17753.9883124891. The cubic root of 315204101 is about 680.5561345770.

Adding to 315204101 its reverse (101402513), we get a palindrome (416606614).

The spelling of 315204101 in words is "three hundred fifteen million, two hundred four thousand, one hundred one".