131133887 has 2 divisors, whose sum is σ = 131133888. Its totient is φ = 131133886.

The previous prime is 131133881. The next prime is 131133889. The reversal of 131133887 is 788331131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131133887 - 2⁶ = 131133823 is a prime.

Together with 131133889, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131133881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65566943 + 65566944.

It is an arithmetic number, because the mean of its divisors is an integer number (65566944).

Almost surely, 2^131133887 is an apocalyptic number.

131133887 is a deficient number, since it is larger than the sum of its proper divisors (1).

131133887 is an equidigital number, since it uses as much as digits as its factorization.

131133887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 35.

The square root of 131133887 is about 11451.3705293297. The cubic root of 131133887 is about 508.0482715512.

The spelling of 131133887 in words is "one hundred thirty-one million, one hundred thirty-three thousand, eight hundred eighty-seven".