71315219 has 2 divisors, whose sum is σ = 71315220. Its totient is φ = 71315218.

The previous prime is 71315171. The next prime is 71315281. The reversal of 71315219 is 91251317.

It is a weak prime.

It is an emirp because it is prime and its reverse (91251317) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71315219 - 2¹⁶ = 71249683 is a prime.

It is a super-2 number, since 2×71315219² = 10171720922035922, which contains 22 as substring.

It is equal to p_4190816 and since 71315219 and 4190816 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 71315191 and 71315200.

It is not a weakly prime, because it can be changed into another prime (71315819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35657609 + 35657610.

It is an arithmetic number, because the mean of its divisors is an integer number (35657610).

Almost surely, 2^71315219 is an apocalyptic number.

71315219 is a deficient number, since it is larger than the sum of its proper divisors (1).

71315219 is an equidigital number, since it uses as much as digits as its factorization.

71315219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1890, while the sum is 29.

The square root of 71315219 is about 8444.8338645589. The cubic root of 71315219 is about 414.6936704906.

The spelling of 71315219 in words is "seventy-one million, three hundred fifteen thousand, two hundred nineteen".