13166345231 has 4 divisors (see below), whose sum is σ = 14179141032. Its totient is φ = 12153549432.

The previous prime is 13166345219. The next prime is 13166345233. The reversal of 13166345231 is 13254366131.

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 13166345231 - 2¹⁸ = 13166083087 is a prime.

It is a super-3 number, since 3×13166345231³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13166345191 and 13166345200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13166345233) 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, 506397881 + ... + 506397906.

It is an arithmetic number, because the mean of its divisors is an integer number (3544785258).

Almost surely, 2^13166345231 is an apocalyptic number.

13166345231 is a deficient number, since it is larger than the sum of its proper divisors (1012795801).

13166345231 is a wasteful number, since it uses less digits than its factorization.

13166345231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012795800.

The product of its digits is 38880, while the sum is 35.

The spelling of 13166345231 in words is "thirteen billion, one hundred sixty-six million, three hundred forty-five thousand, two hundred thirty-one".