73131727 has 2 divisors, whose sum is σ = 73131728. Its totient is φ = 73131726.

The previous prime is 73131701. The next prime is 73131749. The reversal of 73131727 is 72713137.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 73131727 - 2⁷ = 73131599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73131787) 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, 36565863 + 36565864.

It is an arithmetic number, because the mean of its divisors is an integer number (36565864).

Almost surely, 2^73131727 is an apocalyptic number.

73131727 is a deficient number, since it is larger than the sum of its proper divisors (1).

73131727 is an equidigital number, since it uses as much as digits as its factorization.

73131727 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6174, while the sum is 31.

The square root of 73131727 is about 8551.7090104844. The cubic root of 73131727 is about 418.1851529736.

The spelling of 73131727 in words is "seventy-three million, one hundred thirty-one thousand, seven hundred twenty-seven".