71123032117 has 4 divisors (see below), whose sum is σ = 71123820736. Its totient is φ = 71122243500.

The previous prime is 71123032093. The next prime is 71123032147.

71123032117 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 71123032117 - 2¹⁹ = 71122507829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71123032147) 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, 238509 + ... + 446242.

It is an arithmetic number, because the mean of its divisors is an integer number (17780955184).

Almost surely, 2^71123032117 is an apocalyptic number.

It is an amenable number.

71123032117 is a deficient number, since it is larger than the sum of its proper divisors (788619).

71123032117 is a wasteful number, since it uses less digits than its factorization.

71123032117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788618.

The product of its (nonzero) digits is 1764, while the sum is 28.

It can be divided in two parts, 711230 and 32117, that added together give a palindrome (743347).

The spelling of 71123032117 in words is "seventy-one billion, one hundred twenty-three million, thirty-two thousand, one hundred seventeen".