13231436551 has 4 divisors (see below), whose sum is σ = 13270699312. Its totient is φ = 13192173792.

The previous prime is 13231436513. The next prime is 13231436593. The reversal of 13231436551 is 15563413231.

13231436551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15563413231 = 6323 ⋅2461397.

It is a cyclic number.

It is not a de Polignac number, because 13231436551 - 2¹⁹ = 13230912263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231436951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19630875 + ... + 19631548.

It is an arithmetic number, because the mean of its divisors is an integer number (3317674828).

Almost surely, 2^13231436551 is an apocalyptic number.

13231436551 is a deficient number, since it is larger than the sum of its proper divisors (39262761).

13231436551 is an equidigital number, since it uses as much as digits as its factorization.

13231436551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39262760.

The product of its digits is 32400, while the sum is 34.

Adding to 13231436551 its reverse (15563413231), we get a palindrome (28794849782).

The spelling of 13231436551 in words is "thirteen billion, two hundred thirty-one million, four hundred thirty-six thousand, five hundred fifty-one".