71009023 has 8 divisors (see below), whose sum is σ = 77324400. Its totient is φ = 64951488.

The previous prime is 71009021. The next prime is 71009033. The reversal of 71009023 is 32090017.

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 71009023 - 2¹ = 71009021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71008985 and 71009003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71009021) 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, 63886 + ... + 64987.

It is an arithmetic number, because the mean of its divisors is an integer number (9665550).

Almost surely, 2^71009023 is an apocalyptic number.

71009023 is a deficient number, since it is larger than the sum of its proper divisors (6315377).

71009023 is a wasteful number, since it uses less digits than its factorization.

71009023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128921.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 71009023 is about 8426.6851727117. The cubic root of 71009023 is about 414.0993153254.

It can be divided in two parts, 7 and 1009023, that multiplied together give a triangular number (7063161 = T₃₇₅₈).

The spelling of 71009023 in words is "seventy-one million, nine thousand, twenty-three".