131302144243 has 4 divisors (see below), whose sum is σ = 134504635608. Its totient is φ = 128099652880.

The previous prime is 131302144223. The next prime is 131302144291. The reversal of 131302144243 is 342441203131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342441203131 = 119659 ⋅2861809.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131302144243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131302144213) 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, 1601245621 + ... + 1601245702.

It is an arithmetic number, because the mean of its divisors is an integer number (33626158902).

Almost surely, 2^131302144243 is an apocalyptic number.

131302144243 is a deficient number, since it is larger than the sum of its proper divisors (3202491365).

131302144243 is an equidigital number, since it uses as much as digits as its factorization.

131302144243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3202491364.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 131302144243 its reverse (342441203131), we get a palindrome (473743347374).

The spelling of 131302144243 in words is "one hundred thirty-one billion, three hundred two million, one hundred forty-four thousand, two hundred forty-three".