71830013 has 8 divisors (see below), whose sum is σ = 78218400. Its totient is φ = 65702448.

The previous prime is 71829997. The next prime is 71830021. The reversal of 71830013 is 31003817.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71830013 - 2⁴ = 71829997 is a prime.

It is a super-4 number, since 4×71830013⁴ (a number of 33 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71830043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64631 + ... + 65732.

It is an arithmetic number, because the mean of its divisors is an integer number (9777300).

Almost surely, 2^71830013 is an apocalyptic number.

It is an amenable number.

71830013 is a deficient number, since it is larger than the sum of its proper divisors (6388387).

71830013 is a wasteful number, since it uses less digits than its factorization.

71830013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130411.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 71830013 is about 8475.2588751023. The cubic root of 71830013 is about 415.6891110554.

The spelling of 71830013 in words is "seventy-one million, eight hundred thirty thousand, thirteen".