13012132231 has 36 divisors (see below), whose sum is σ = 16598571456. Its totient is φ = 10158220800.

The previous prime is 13012132207. The next prime is 13012132241. The reversal of 13012132231 is 13223121031.

It is a de Polignac number, because none of the positive numbers 2^k-13012132231 is a prime.

It is a super-2 number, since 2×13012132231² (a number of 21 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 = 13012132199 and 13012132208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13012132241) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 424171 + ... + 453811.

Almost surely, 2^13012132231 is an apocalyptic number.

13012132231 is a deficient number, since it is larger than the sum of its proper divisors (3586439225).

13012132231 is a wasteful number, since it uses less digits than its factorization.

13012132231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29720 (or 29696 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 13012132231 its reverse (13223121031), we get a palindrome (26235253262).

The spelling of 13012132231 in words is "thirteen billion, twelve million, one hundred thirty-two thousand, two hundred thirty-one".