71212723 has 2 divisors, whose sum is σ = 71212724. Its totient is φ = 71212722.

The previous prime is 71212717. The next prime is 71212783. The reversal of 71212723 is 32721217.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71212723 - 2¹³ = 71204531 is a prime.

It is not a weakly prime, because it can be changed into another prime (71212783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35606361 + 35606362.

It is an arithmetic number, because the mean of its divisors is an integer number (35606362).

Almost surely, 2^71212723 is an apocalyptic number.

71212723 is a deficient number, since it is larger than the sum of its proper divisors (1).

71212723 is an equidigital number, since it uses as much as digits as its factorization.

71212723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1176, while the sum is 25.

The square root of 71212723 is about 8438.7631202683. The cubic root of 71212723 is about 414.4949058971.

The spelling of 71212723 in words is "seventy-one million, two hundred twelve thousand, seven hundred twenty-three".