71881023 has 8 divisors (see below), whose sum is σ = 96541488. Its totient is φ = 47570624.

The previous prime is 71881021. The next prime is 71881063. The reversal of 71881023 is 32018817.

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 71881023 - 2¹ = 71881021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71881021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87036 + ... + 87857.

It is an arithmetic number, because the mean of its divisors is an integer number (12067686).

Almost surely, 2^71881023 is an apocalyptic number.

71881023 is a deficient number, since it is larger than the sum of its proper divisors (24660465).

71881023 is a wasteful number, since it uses less digits than its factorization.

71881023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175033.

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 71881023 is about 8478.2676886260. The cubic root of 71881023 is about 415.7874881509.

The spelling of 71881023 in words is "seventy-one million, eight hundred eighty-one thousand, twenty-three".