68731423 has 2 divisors, whose sum is σ = 68731424. Its totient is φ = 68731422.

The previous prime is 68731349. The next prime is 68731427. The reversal of 68731423 is 32413786.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68731423 - 2²⁵ = 35176991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68731427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34365711 + 34365712.

It is an arithmetic number, because the mean of its divisors is an integer number (34365712).

Almost surely, 2^68731423 is an apocalyptic number.

68731423 is a deficient number, since it is larger than the sum of its proper divisors (1).

68731423 is an equidigital number, since it uses as much as digits as its factorization.

68731423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 34.

The square root of 68731423 is about 8290.4416649537. The cubic root of 68731423 is about 409.6237337188.

The spelling of 68731423 in words is "sixty-eight million, seven hundred thirty-one thousand, four hundred twenty-three".