315023101 has 4 divisors (see below), whose sum is σ = 317137500. Its totient is φ = 312908704.

The previous prime is 315023099. The next prime is 315023161. The reversal of 315023101 is 101320513.

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 16597476 + 298425625 = 4074^2 + 17275^2 .

It is a cyclic number.

It is not a de Polignac number, because 315023101 - 2¹ = 315023099 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 (315023161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1056976 + ... + 1057273.

It is an arithmetic number, because the mean of its divisors is an integer number (79284375).

Almost surely, 2^315023101 is an apocalyptic number.

It is an amenable number.

315023101 is a deficient number, since it is larger than the sum of its proper divisors (2114399).

315023101 is a wasteful number, since it uses less digits than its factorization.

315023101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2114398.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 315023101 is about 17748.8901343154. The cubic root of 315023101 is about 680.4258441339.

Adding to 315023101 its reverse (101320513), we get a palindrome (416343614).

The spelling of 315023101 in words is "three hundred fifteen million, twenty-three thousand, one hundred one".