71329811 has 8 divisors (see below), whose sum is σ = 82552320. Its totient is φ = 60365448.

The previous prime is 71329799. The next prime is 71329813. The reversal of 71329811 is 11892317.

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 71329811 - 2¹⁴ = 71313427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71329813) 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, 63941 + ... + 65046.

It is an arithmetic number, because the mean of its divisors is an integer number (10319040).

Almost surely, 2^71329811 is an apocalyptic number.

71329811 is a deficient number, since it is larger than the sum of its proper divisors (11222509).

71329811 is a wasteful number, since it uses less digits than its factorization.

71329811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129073.

The product of its digits is 3024, while the sum is 32.

The square root of 71329811 is about 8445.6977805271. The cubic root of 71329811 is about 414.7219524265.

The spelling of 71329811 in words is "seventy-one million, three hundred twenty-nine thousand, eight hundred eleven".