315615228706969 has 3 divisors (see below), whose sum is σ = 315615246472533. Its totient is φ = 315615210941406.

The previous prime is 315615228706963. The next prime is 315615228706997. The reversal of 315615228706969 is 969607822516513.

The square root of 315615228706969 is 17765563.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 315615228706969 - 2³⁵ = 315580868968601 is a prime.

It is a super-2 number, since 2×315615228706969² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 315615228706898 and 315615228706907.

It is not an unprimeable number, because it can be changed into a prime (315615228706963) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 8882782 + ... + 26648344.

It is an arithmetic number, because the mean of its divisors is an integer number (105205082157511).

Almost surely, 2^{315615228706969} is an apocalyptic number.

315615228706969 is the 17765563-rd square number.

315615228706969 is the 8882782-nd centered octagonal number.

It is an amenable number.

315615228706969 is a deficient number, since it is larger than the sum of its proper divisors (17765564).

315615228706969 is an frugal number, since it uses more digits than its factorization.

315615228706969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35531126 (or 17765563 counting only the distinct ones).

The product of its (nonzero) digits is 293932800, while the sum is 70.

The spelling of 315615228706969 in words is "three hundred fifteen trillion, six hundred fifteen billion, two hundred twenty-eight million, seven hundred six thousand, nine hundred sixty-nine".