320131113243 has 4 divisors (see below), whose sum is σ = 426841484328. Its totient is φ = 213420742160.

The previous prime is 320131113179. The next prime is 320131113343. The reversal of 320131113243 is 342311131023.

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 320131113243 - 2⁶ = 320131113179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (320131113143) 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, 53355185538 + ... + 53355185543.

It is an arithmetic number, because the mean of its divisors is an integer number (106710371082).

Almost surely, 2^320131113243 is an apocalyptic number.

320131113243 is a deficient number, since it is larger than the sum of its proper divisors (106710371085).

320131113243 is a wasteful number, since it uses less digits than its factorization.

320131113243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106710371084.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 320131113243 its reverse (342311131023), we get a palindrome (662442244266).

The spelling of 320131113243 in words is "three hundred twenty billion, one hundred thirty-one million, one hundred thirteen thousand, two hundred forty-three".