135331143 has 4 divisors (see below), whose sum is σ = 180441528. Its totient is φ = 90220760.

The previous prime is 135331117. The next prime is 135331159. The reversal of 135331143 is 341133531.

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 135331143 - 2⁵ = 135331111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135331043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22555188 + ... + 22555193.

It is an arithmetic number, because the mean of its divisors is an integer number (45110382).

Almost surely, 2^135331143 is an apocalyptic number.

135331143 is a deficient number, since it is larger than the sum of its proper divisors (45110385).

135331143 is an equidigital number, since it uses as much as digits as its factorization.

135331143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45110384.

The product of its digits is 1620, while the sum is 24.

The square root of 135331143 is about 11633.1914365749. The cubic root of 135331143 is about 513.4118834183.

Adding to 135331143 its reverse (341133531), we get a palindrome (476464674).

The spelling of 135331143 in words is "one hundred thirty-five million, three hundred thirty-one thousand, one hundred forty-three".