13612143 has 8 divisors (see below), whose sum is σ = 18231808. Its totient is φ = 9033624.

The previous prime is 13612141. The next prime is 13612169. The reversal of 13612143 is 34121631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13612143 - 2¹ = 13612141 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 (13612141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9505 + ... + 10842.

It is an arithmetic number, because the mean of its divisors is an integer number (2278976).

Almost surely, 2^13612143 is an apocalyptic number.

13612143 is a deficient number, since it is larger than the sum of its proper divisors (4619665).

13612143 is a wasteful number, since it uses less digits than its factorization.

13612143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20573.

The product of its digits is 432, while the sum is 21.

The square root of 13612143 is about 3689.4637821776. The cubic root of 13612143 is about 238.7676587544.

Adding to 13612143 its reverse (34121631), we get a palindrome (47733774).

The spelling of 13612143 in words is "thirteen million, six hundred twelve thousand, one hundred forty-three".