131314242243 has 4 divisors (see below), whose sum is σ = 175085656328. Its totient is φ = 87542828160.

The previous prime is 131314242181. The next prime is 131314242259. The reversal of 131314242243 is 342242413131.

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

It is not a de Polignac number, because 131314242243 - 2²⁶ = 131247133379 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131314242243.

It is not an unprimeable number, because it can be changed into a prime (131314242743) 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, 21885707038 + ... + 21885707043.

It is an arithmetic number, because the mean of its divisors is an integer number (43771414082).

Almost surely, 2^131314242243 is an apocalyptic number.

131314242243 is a deficient number, since it is larger than the sum of its proper divisors (43771414085).

131314242243 is an equidigital number, since it uses as much as digits as its factorization.

131314242243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43771414084.

The product of its digits is 13824, while the sum is 30.

Adding to 131314242243 its reverse (342242413131), we get a palindrome (473556655374).

The spelling of 131314242243 in words is "one hundred thirty-one billion, three hundred fourteen million, two hundred forty-two thousand, two hundred forty-three".