131113331291 has 4 divisors (see below), whose sum is σ = 132316206000. Its totient is φ = 129910456584.

The previous prime is 131113331281. The next prime is 131113331303. The reversal of 131113331291 is 192133311131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 192133311131 = 21163 ⋅9078737.

It is a cyclic number.

It is not a de Polignac number, because 131113331291 - 2¹⁸ = 131113069147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131113331201) 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, 601437191 + ... + 601437408.

It is an arithmetic number, because the mean of its divisors is an integer number (33079051500).

Almost surely, 2^131113331291 is an apocalyptic number.

131113331291 is a deficient number, since it is larger than the sum of its proper divisors (1202874709).

131113331291 is a wasteful number, since it uses less digits than its factorization.

131113331291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202874708.

The product of its digits is 1458, while the sum is 29.

The spelling of 131113331291 in words is "one hundred thirty-one billion, one hundred thirteen million, three hundred thirty-one thousand, two hundred ninety-one".