71763113231 has 4 divisors (see below), whose sum is σ = 71763741000. Its totient is φ = 71762485464.

The previous prime is 71763113209. The next prime is 71763113239. The reversal of 71763113231 is 13231136717.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 13231136717 = 53 ⋅249644089.

It is a cyclic number.

It is not a de Polignac number, because 71763113231 - 2⁶ = 71763113167 is a prime.

It is a super-2 number, since 2×71763113231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71763113191 and 71763113200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71763113239) 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, 88436 + ... + 389033.

It is an arithmetic number, because the mean of its divisors is an integer number (17940935250).

Almost surely, 2^71763113231 is an apocalyptic number.

71763113231 is a deficient number, since it is larger than the sum of its proper divisors (627769).

71763113231 is a wasteful number, since it uses less digits than its factorization.

71763113231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627768.

The product of its digits is 15876, while the sum is 35.

Adding to 71763113231 its reverse (13231136717), we get a palindrome (84994249948).

The spelling of 71763113231 in words is "seventy-one billion, seven hundred sixty-three million, one hundred thirteen thousand, two hundred thirty-one".