71295231 has 16 divisors (see below), whose sum is σ = 110130944. Its totient is φ = 40181184.

The previous prime is 71295223. The next prime is 71295241. The reversal of 71295231 is 13259217.

It is not a de Polignac number, because 71295231 - 2³ = 71295223 is a prime.

It is a super-2 number, since 2×71295231² = 10166019926686722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71295241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21721 + ... + 24786.

It is an arithmetic number, because the mean of its divisors is an integer number (6883184).

Almost surely, 2^71295231 is an apocalyptic number.

71295231 is a deficient number, since it is larger than the sum of its proper divisors (38835713).

71295231 is a wasteful number, since it uses less digits than its factorization.

71295231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46590.

The product of its digits is 3780, while the sum is 30.

The square root of 71295231 is about 8443.6503361994. The cubic root of 71295231 is about 414.6549238681.

The spelling of 71295231 in words is "seventy-one million, two hundred ninety-five thousand, two hundred thirty-one".