71719423 has 2 divisors, whose sum is σ = 71719424. Its totient is φ = 71719422.

The previous prime is 71719421. The next prime is 71719457. The reversal of 71719423 is 32491717.

It is an a-pointer prime, because the next prime (71719457) can be obtained adding 71719423 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71719423 - 2¹ = 71719421 is a prime.

Together with 71719421, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71719421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35859711 + 35859712.

It is an arithmetic number, because the mean of its divisors is an integer number (35859712).

Almost surely, 2^71719423 is an apocalyptic number.

71719423 is a deficient number, since it is larger than the sum of its proper divisors (1).

71719423 is an equidigital number, since it uses as much as digits as its factorization.

71719423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10584, while the sum is 34.

The square root of 71719423 is about 8468.7320774718. The cubic root of 71719423 is about 415.4756688395.

The spelling of 71719423 in words is "seventy-one million, seven hundred nineteen thousand, four hundred twenty-three".