71306723 has 2 divisors, whose sum is σ = 71306724. Its totient is φ = 71306722.

The previous prime is 71306701. The next prime is 71306747. The reversal of 71306723 is 32760317.

It is a weak prime.

It is an emirp because it is prime and its reverse (32760317) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71306723 - 2¹⁸ = 71044579 is a prime.

It is not a weakly prime, because it can be changed into another prime (71306773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35653361 + 35653362.

It is an arithmetic number, because the mean of its divisors is an integer number (35653362).

Almost surely, 2^71306723 is an apocalyptic number.

71306723 is a deficient number, since it is larger than the sum of its proper divisors (1).

71306723 is an equidigital number, since it uses as much as digits as its factorization.

71306723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5292, while the sum is 29.

The square root of 71306723 is about 8444.3308201420. The cubic root of 71306723 is about 414.6772019285.

The spelling of 71306723 in words is "seventy-one million, three hundred six thousand, seven hundred twenty-three".