71325913 has 2 divisors, whose sum is σ = 71325914. Its totient is φ = 71325912.

The previous prime is 71325911. The next prime is 71325941. The reversal of 71325913 is 31952317.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69755904 + 1570009 = 8352^2 + 1253^2 .

It is an emirp because it is prime and its reverse (31952317) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71325913 - 2¹ = 71325911 is a prime.

Together with 71325911, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (71325911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35662956 + 35662957.

It is an arithmetic number, because the mean of its divisors is an integer number (35662957).

Almost surely, 2^71325913 is an apocalyptic number.

It is an amenable number.

71325913 is a deficient number, since it is larger than the sum of its proper divisors (1).

71325913 is an equidigital number, since it uses as much as digits as its factorization.

71325913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5670, while the sum is 31.

The square root of 71325913 is about 8445.4670089936. The cubic root of 71325913 is about 414.7143977749.

The spelling of 71325913 in words is "seventy-one million, three hundred twenty-five thousand, nine hundred thirteen".