13340343231 has 24 divisors (see below), whose sum is σ = 19326082256. Its totient is φ = 8867439360.

The previous prime is 13340343227. The next prime is 13340343257. The reversal of 13340343231 is 13234304331.

13340343231 is a `hidden beast` number, since 1 + 334 + 0 + 3 + 4 + 323 + 1 = 666.

It is not a de Polignac number, because 13340343231 - 2² = 13340343227 is a prime.

It is a super-2 number, since 2×13340343231² (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 = 13340343195 and 13340343204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13340343221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7121511 + ... + 7123383.

Almost surely, 2^13340343231 is an apocalyptic number.

13340343231 is a deficient number, since it is larger than the sum of its proper divisors (5985739025).

13340343231 is a wasteful number, since it uses less digits than its factorization.

13340343231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3783 (or 3780 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

Adding to 13340343231 its reverse (13234304331), we get a palindrome (26574647562).

The spelling of 13340343231 in words is "thirteen billion, three hundred forty million, three hundred forty-three thousand, two hundred thirty-one".