71823117 has 4 divisors (see below), whose sum is σ = 95764160. Its totient is φ = 47882076.

The previous prime is 71823091. The next prime is 71823127. The reversal of 71823117 is 71132817.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 71823117 - 2¹¹ = 71821069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71823127) 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, 11970517 + ... + 11970522.

It is an arithmetic number, because the mean of its divisors is an integer number (23941040).

Almost surely, 2^71823117 is an apocalyptic number.

It is an amenable number.

71823117 is a deficient number, since it is larger than the sum of its proper divisors (23941043).

71823117 is a wasteful number, since it uses less digits than its factorization.

71823117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23941042.

The product of its digits is 2352, while the sum is 30.

The square root of 71823117 is about 8474.8520341066. The cubic root of 71823117 is about 415.6758079633.

The spelling of 71823117 in words is "seventy-one million, eight hundred twenty-three thousand, one hundred seventeen".