131188823 has 2 divisors, whose sum is σ = 131188824. Its totient is φ = 131188822.

The previous prime is 131188793. The next prime is 131188831. The reversal of 131188823 is 328881131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131188823 is a prime.

It is equal to p_7441838 and since 131188823 and 7441838 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131188843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65594411 + 65594412.

It is an arithmetic number, because the mean of its divisors is an integer number (65594412).

Almost surely, 2^131188823 is an apocalyptic number.

131188823 is a deficient number, since it is larger than the sum of its proper divisors (1).

131188823 is an equidigital number, since it uses as much as digits as its factorization.

131188823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 35.

The square root of 131188823 is about 11453.7689430161. The cubic root of 131188823 is about 508.1192073048.

The spelling of 131188823 in words is "one hundred thirty-one million, one hundred eighty-eight thousand, eight hundred twenty-three".