131162306243 has 4 divisors (see below), whose sum is σ = 138877736040. Its totient is φ = 123446876448.

The previous prime is 131162306221. The next prime is 131162306267. The reversal of 131162306243 is 342603261131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342603261131 = 31 ⋅11051718101.

It is a cyclic number.

It is not a de Polignac number, because 131162306243 - 2⁶ = 131162306179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131162306293) 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, 3857714873 + ... + 3857714906.

It is an arithmetic number, because the mean of its divisors is an integer number (34719434010).

Almost surely, 2^131162306243 is an apocalyptic number.

131162306243 is a deficient number, since it is larger than the sum of its proper divisors (7715429797).

131162306243 is an equidigital number, since it uses as much as digits as its factorization.

131162306243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7715429796.

The product of its (nonzero) digits is 15552, while the sum is 32.

Adding to 131162306243 its reverse (342603261131), we get a palindrome (473765567374).

The spelling of 131162306243 in words is "one hundred thirty-one billion, one hundred sixty-two million, three hundred six thousand, two hundred forty-three".