71292248231 has 4 divisors (see below), whose sum is σ = 71314330200. Its totient is φ = 71270166264.

The previous prime is 71292248177. The next prime is 71292248239. The reversal of 71292248231 is 13284229217.

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 71292248231 - 2¹⁴ = 71292231847 is a prime.

It is a super-2 number, since 2×71292248231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71292248239) 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, 11036141 + ... + 11042598.

It is an arithmetic number, because the mean of its divisors is an integer number (17828582550).

Almost surely, 2^71292248231 is an apocalyptic number.

71292248231 is a deficient number, since it is larger than the sum of its proper divisors (22081969).

71292248231 is a wasteful number, since it uses less digits than its factorization.

71292248231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22081968.

The product of its digits is 96768, while the sum is 41.

The spelling of 71292248231 in words is "seventy-one billion, two hundred ninety-two million, two hundred forty-eight thousand, two hundred thirty-one".