68531383 has 2 divisors, whose sum is σ = 68531384. Its totient is φ = 68531382.

The previous prime is 68531371. The next prime is 68531389. The reversal of 68531383 is 38313586.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68531383 - 2⁹ = 68530871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68531389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34265691 + 34265692.

It is an arithmetic number, because the mean of its divisors is an integer number (34265692).

Almost surely, 2^68531383 is an apocalyptic number.

68531383 is a deficient number, since it is larger than the sum of its proper divisors (1).

68531383 is an equidigital number, since it uses as much as digits as its factorization.

68531383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 37.

The square root of 68531383 is about 8278.3683778870. The cubic root of 68531383 is about 409.2259498409.

The spelling of 68531383 in words is "sixty-eight million, five hundred thirty-one thousand, three hundred eighty-three".