13235340143 has 4 divisors (see below), whose sum is σ = 13384051920. Its totient is φ = 13086628368.

The previous prime is 13235340137. The next prime is 13235340199. The reversal of 13235340143 is 34104353231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13235340143 - 2²⁴ = 13218562927 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 (13235340113) 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, 74355755 + ... + 74355932.

It is an arithmetic number, because the mean of its divisors is an integer number (3346012980).

Almost surely, 2^13235340143 is an apocalyptic number.

13235340143 is a deficient number, since it is larger than the sum of its proper divisors (148711777).

13235340143 is an equidigital number, since it uses as much as digits as its factorization.

13235340143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148711776.

The product of its (nonzero) digits is 12960, while the sum is 29.

Adding to 13235340143 its reverse (34104353231), we get a palindrome (47339693374).

The spelling of 13235340143 in words is "thirteen billion, two hundred thirty-five million, three hundred forty thousand, one hundred forty-three".