131232499 has 2 divisors, whose sum is σ = 131232500. Its totient is φ = 131232498.

The previous prime is 131232481. The next prime is 131232527. The reversal of 131232499 is 994232131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131232499 - 2⁵ = 131232467 is a prime.

It is not a weakly prime, because it can be changed into another prime (131230499) 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, 65616249 + 65616250.

It is an arithmetic number, because the mean of its divisors is an integer number (65616250).

Almost surely, 2^131232499 is an apocalyptic number.

131232499 is a deficient number, since it is larger than the sum of its proper divisors (1).

131232499 is an equidigital number, since it uses as much as digits as its factorization.

131232499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 34.

The square root of 131232499 is about 11455.6754056668. The cubic root of 131232499 is about 508.1755895270.

The spelling of 131232499 in words is "one hundred thirty-one million, two hundred thirty-two thousand, four hundred ninety-nine".