315453642443 has 4 divisors (see below), whose sum is σ = 315713704368. Its totient is φ = 315193580520.

The previous prime is 315453642409. The next prime is 315453642487. The reversal of 315453642443 is 344246354513.

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 315453642443 - 2⁶ = 315453642379 is a prime.

It is a super-2 number, since 2×315453642443² (a number of 24 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 = 315453642394 and 315453642403.

It is not an unprimeable number, because it can be changed into a prime (315453645443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130029143 + ... + 130031568.

It is an arithmetic number, because the mean of its divisors is an integer number (78928426092).

Almost surely, 2^315453642443 is an apocalyptic number.

315453642443 is a deficient number, since it is larger than the sum of its proper divisors (260061925).

315453642443 is a wasteful number, since it uses less digits than its factorization.

315453642443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260061924.

The product of its digits is 2073600, while the sum is 44.

Adding to 315453642443 its reverse (344246354513), we get a palindrome (659699996956).

The spelling of 315453642443 in words is "three hundred fifteen billion, four hundred fifty-three million, six hundred forty-two thousand, four hundred forty-three".