131408863 has 4 divisors (see below), whose sum is σ = 131823720. Its totient is φ = 130994008.

The previous prime is 131408819. The next prime is 131408869. The reversal of 131408863 is 368804131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131408863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131408869) 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, 206953 + ... + 207586.

It is an arithmetic number, because the mean of its divisors is an integer number (32955930).

Almost surely, 2^131408863 is an apocalyptic number.

131408863 is a deficient number, since it is larger than the sum of its proper divisors (414857).

131408863 is an equidigital number, since it uses as much as digits as its factorization.

131408863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414856.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 131408863 is about 11463.3704903924. The cubic root of 131408863 is about 508.4031341816.

The spelling of 131408863 in words is "one hundred thirty-one million, four hundred eight thousand, eight hundred sixty-three".