71013413 has 4 divisors (see below), whose sum is σ = 71107980. Its totient is φ = 70918848.

The previous prime is 71013407. The next prime is 71013433. The reversal of 71013413 is 31431017.

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 58951684 + 12061729 = 7678^2 + 3473^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71013413 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71013433) 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, 46148 + ... + 47661.

It is an arithmetic number, because the mean of its divisors is an integer number (17776995).

Almost surely, 2^71013413 is an apocalyptic number.

It is an amenable number.

71013413 is a deficient number, since it is larger than the sum of its proper divisors (94567).

71013413 is an equidigital number, since it uses as much as digits as its factorization.

71013413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94566.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 71013413 is about 8426.9456507088. The cubic root of 71013413 is about 414.1078487880.

The spelling of 71013413 in words is "seventy-one million, thirteen thousand, four hundred thirteen".