315534032243 has 4 divisors (see below), whose sum is σ = 315551520768. Its totient is φ = 315516543720.

The previous prime is 315534032221. The next prime is 315534032269. The reversal of 315534032243 is 342230435513.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 315534032243 - 2⁶ = 315534032179 is a prime.

It is a super-2 number, since 2×315534032243² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315534032543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8717171 + ... + 8753292.

It is an arithmetic number, because the mean of its divisors is an integer number (78887880192).

Almost surely, 2^315534032243 is an apocalyptic number.

315534032243 is a deficient number, since it is larger than the sum of its proper divisors (17488525).

315534032243 is a wasteful number, since it uses less digits than its factorization.

315534032243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17488524.

The product of its (nonzero) digits is 129600, while the sum is 35.

Adding to 315534032243 its reverse (342230435513), we get a palindrome (657764467756).

The spelling of 315534032243 in words is "three hundred fifteen billion, five hundred thirty-four million, thirty-two thousand, two hundred forty-three".