13400042231 has 4 divisors (see below), whose sum is σ = 13404955200. Its totient is φ = 13395129264.

The previous prime is 13400042189. The next prime is 13400042251. The reversal of 13400042231 is 13224000431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13224000431 = 163 ⋅81128837.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13400042231 is a prime.

It is a super-2 number, since 2×13400042231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13400042251) 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, 2452391 + ... + 2457848.

It is an arithmetic number, because the mean of its divisors is an integer number (3351238800).

Almost surely, 2^13400042231 is an apocalyptic number.

13400042231 is a deficient number, since it is larger than the sum of its proper divisors (4912969).

13400042231 is an equidigital number, since it uses as much as digits as its factorization.

13400042231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4912968.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 13400042231 its reverse (13224000431), we get a palindrome (26624042662).

The spelling of 13400042231 in words is "thirteen billion, four hundred million, forty-two thousand, two hundred thirty-one".