71313923 has 2 divisors, whose sum is σ = 71313924. Its totient is φ = 71313922.

The previous prime is 71313917. The next prime is 71313971. The reversal of 71313923 is 32931317.

It is a weak prime.

It is an emirp because it is prime and its reverse (32931317) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71313923 - 2⁸ = 71313667 is a prime.

It is a super-2 number, since 2×71313923² = 10171351227299858, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (71319923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35656961 + 35656962.

It is an arithmetic number, because the mean of its divisors is an integer number (35656962).

Almost surely, 2^71313923 is an apocalyptic number.

71313923 is a deficient number, since it is larger than the sum of its proper divisors (1).

71313923 is an equidigital number, since it uses as much as digits as its factorization.

71313923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3402, while the sum is 29.

The square root of 71313923 is about 8444.7571309067. The cubic root of 71313923 is about 414.6911584216.

The spelling of 71313923 in words is "seventy-one million, three hundred thirteen thousand, nine hundred twenty-three".