71209023 has 8 divisors (see below), whose sum is σ = 95233536. Its totient is φ = 47328600.

The previous prime is 71209013. The next prime is 71209043. The reversal of 71209023 is 32090217.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71209023 - 2⁶ = 71208959 is a prime.

It is a super-2 number, since 2×71209023² = 10141449913229058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71208984 and 71209002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71209003) 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, 34863 + ... + 36848.

It is an arithmetic number, because the mean of its divisors is an integer number (11904192).

Almost surely, 2^71209023 is an apocalyptic number.

71209023 is a deficient number, since it is larger than the sum of its proper divisors (24024513).

71209023 is a wasteful number, since it uses less digits than its factorization.

71209023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72045.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 71209023 is about 8438.5438909802. The cubic root of 71209023 is about 414.4877271344.

The spelling of 71209023 in words is "seventy-one million, two hundred nine thousand, twenty-three".