315223211443 has 4 divisors (see below), whose sum is σ = 360255098800. Its totient is φ = 270191324088.

The previous prime is 315223211393. The next prime is 315223211449. The reversal of 315223211443 is 344112322513.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 344112322513 = 490519 ⋅701527.

It is not a de Polignac number, because 315223211443 - 2²⁵ = 315189657011 is a prime.

It is a super-2 number, since 2×315223211443² (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 (315223211449) 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, 22515943668 + ... + 22515943681.

It is an arithmetic number, because the mean of its divisors is an integer number (90063774700).

Almost surely, 2^315223211443 is an apocalyptic number.

315223211443 is a deficient number, since it is larger than the sum of its proper divisors (45031887357).

315223211443 is an equidigital number, since it uses as much as digits as its factorization.

315223211443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45031887356.

The product of its digits is 17280, while the sum is 31.

Adding to 315223211443 its reverse (344112322513), we get a palindrome (659335533956).

The spelling of 315223211443 in words is "three hundred fifteen billion, two hundred twenty-three million, two hundred eleven thousand, four hundred forty-three".