315315101 has 4 divisors (see below), whose sum is σ = 316949052. Its totient is φ = 313681152.

The previous prime is 315315097. The next prime is 315315113. The reversal of 315315101 is 101513513.

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 72267001 + 243048100 = 8501^2 + 15590^2 .

It is a cyclic number.

It is not a de Polignac number, because 315315101 - 2² = 315315097 is a prime.

It is a super-2 number, since 2×315315101² = 198847225837280402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315315401) 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, 816686 + ... + 817071.

It is an arithmetic number, because the mean of its divisors is an integer number (79237263).

Almost surely, 2^315315101 is an apocalyptic number.

It is an amenable number.

315315101 is a deficient number, since it is larger than the sum of its proper divisors (1633951).

315315101 is a wasteful number, since it uses less digits than its factorization.

315315101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633950.

The product of its (nonzero) digits is 225, while the sum is 20.

The square root of 315315101 is about 17757.1140954830. The cubic root of 315315101 is about 680.6360117794.

Adding to 315315101 its reverse (101513513), we get a palindrome (416828614).

The spelling of 315315101 in words is "three hundred fifteen million, three hundred fifteen thousand, one hundred one".