71020023 has 4 divisors (see below), whose sum is σ = 94693368. Its totient is φ = 47346680.

The previous prime is 71020009. The next prime is 71020063. The reversal of 71020023 is 32002017.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71020023 - 2⁴ = 71020007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71019984 and 71020011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71020063) 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, 11836668 + ... + 11836673.

It is an arithmetic number, because the mean of its divisors is an integer number (23673342).

Almost surely, 2^71020023 is an apocalyptic number.

71020023 is a deficient number, since it is larger than the sum of its proper divisors (23673345).

71020023 is a wasteful number, since it uses less digits than its factorization.

71020023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23673344.

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 71020023 is about 8427.3378358768. The cubic root of 71020023 is about 414.1206969146.

The spelling of 71020023 in words is "seventy-one million, twenty thousand, twenty-three".