71135723 has 4 divisors (see below), whose sum is σ = 71196840. Its totient is φ = 71074608.

The previous prime is 71135707. The next prime is 71135741. The reversal of 71135723 is 32753117.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32753117 = 97 ⋅337661.

It is a cyclic number.

It is not a de Polignac number, because 71135723 - 2⁴ = 71135707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71135773) 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, 28778 + ... + 31151.

It is an arithmetic number, because the mean of its divisors is an integer number (17799210).

Almost surely, 2^71135723 is an apocalyptic number.

71135723 is a deficient number, since it is larger than the sum of its proper divisors (61117).

71135723 is a wasteful number, since it uses less digits than its factorization.

71135723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61116.

The product of its digits is 4410, while the sum is 29.

The square root of 71135723 is about 8434.1996063646. The cubic root of 71135723 is about 414.3454587356.

The spelling of 71135723 in words is "seventy-one million, one hundred thirty-five thousand, seven hundred twenty-three".