131243767 has 2 divisors, whose sum is σ = 131243768. Its totient is φ = 131243766.

The previous prime is 131243729. The next prime is 131243771. The reversal of 131243767 is 767342131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131243767 - 2¹⁵ = 131210999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131243467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65621883 + 65621884.

It is an arithmetic number, because the mean of its divisors is an integer number (65621884).

Almost surely, 2^131243767 is an apocalyptic number.

131243767 is a deficient number, since it is larger than the sum of its proper divisors (1).

131243767 is an equidigital number, since it uses as much as digits as its factorization.

131243767 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21168, while the sum is 34.

The square root of 131243767 is about 11456.1672037379. The cubic root of 131243767 is about 508.1901335836.

Adding to 131243767 its reverse (767342131), we get a palindrome (898585898).

The spelling of 131243767 in words is "one hundred thirty-one million, two hundred forty-three thousand, seven hundred sixty-seven".