13020132231 has 12 divisors (see below), whose sum is σ = 18810943008. Its totient is φ = 8678202624.

The previous prime is 13020132211. The next prime is 13020132263. The reversal of 13020132231 is 13223102031.

13020132231 is a `hidden beast` number, since 1 + 302 + 0 + 132 + 231 = 666.

It is not a de Polignac number, because 13020132231 - 2³¹ = 10872648583 is a prime.

It is a super-2 number, since 2×13020132231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13020132211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112735 + ... + 196848.

It is an arithmetic number, because the mean of its divisors is an integer number (1567578584).

Almost surely, 2^13020132231 is an apocalyptic number.

13020132231 is a deficient number, since it is larger than the sum of its proper divisors (5790810777).

13020132231 is a wasteful number, since it uses less digits than its factorization.

13020132231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314262 (or 314259 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 13020132231 its reverse (13223102031), we get a palindrome (26243234262).

The spelling of 13020132231 in words is "thirteen billion, twenty million, one hundred thirty-two thousand, two hundred thirty-one".