131178323 has 2 divisors, whose sum is σ = 131178324. Its totient is φ = 131178322.

The previous prime is 131178287. The next prime is 131178347. The reversal of 131178323 is 323871131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131178323 is a prime.

It is not a weakly prime, because it can be changed into another prime (131178353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65589161 + 65589162.

It is an arithmetic number, because the mean of its divisors is an integer number (65589162).

Almost surely, 2^131178323 is an apocalyptic number.

131178323 is a deficient number, since it is larger than the sum of its proper divisors (1).

131178323 is an equidigital number, since it uses as much as digits as its factorization.

131178323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 29.

The square root of 131178323 is about 11453.3105694380. The cubic root of 131178323 is about 508.1056507789.

The spelling of 131178323 in words is "one hundred thirty-one million, one hundred seventy-eight thousand, three hundred twenty-three".