71379313 has 4 divisors (see below), whose sum is σ = 71749348. Its totient is φ = 71009280.

The previous prime is 71379289. The next prime is 71379331. The reversal of 71379313 is 31397317.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18045504 + 53333809 = 4248^2 + 7303^2 .

It is a cyclic number.

It is not a de Polignac number, because 71379313 - 2¹³ = 71371121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71379383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184728 + ... + 185113.

It is an arithmetic number, because the mean of its divisors is an integer number (17937337).

Almost surely, 2^71379313 is an apocalyptic number.

It is an amenable number.

71379313 is a deficient number, since it is larger than the sum of its proper divisors (370035).

71379313 is a wasteful number, since it uses less digits than its factorization.

71379313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370034.

The product of its digits is 11907, while the sum is 34.

The square root of 71379313 is about 8448.6278767620. The cubic root of 71379313 is about 414.8178675311.

The spelling of 71379313 in words is "seventy-one million, three hundred seventy-nine thousand, three hundred thirteen".