71923823 has 2 divisors, whose sum is σ = 71923824. Its totient is φ = 71923822.

The previous prime is 71923777. The next prime is 71923843. The reversal of 71923823 is 32832917.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71923823 - 2¹⁴ = 71907439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71923843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35961911 + 35961912.

It is an arithmetic number, because the mean of its divisors is an integer number (35961912).

Almost surely, 2^71923823 is an apocalyptic number.

71923823 is a deficient number, since it is larger than the sum of its proper divisors (1).

71923823 is an equidigital number, since it uses as much as digits as its factorization.

71923823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 35.

The square root of 71923823 is about 8480.7914135415. The cubic root of 71923823 is about 415.8699956654.

It can be divided in two parts, 719 and 23823, that added together give a palindrome (24542).

The spelling of 71923823 in words is "seventy-one million, nine hundred twenty-three thousand, eight hundred twenty-three".