135431503 has 4 divisors (see below), whose sum is σ = 143398080. Its totient is φ = 127464928.

The previous prime is 135431473. The next prime is 135431509. The reversal of 135431503 is 305134531.

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 135431503 - 2⁹ = 135430991 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 (135431509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3983263 + ... + 3983296.

It is an arithmetic number, because the mean of its divisors is an integer number (35849520).

Almost surely, 2^135431503 is an apocalyptic number.

135431503 is a deficient number, since it is larger than the sum of its proper divisors (7966577).

135431503 is an equidigital number, since it uses as much as digits as its factorization.

135431503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7966576.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 135431503 is about 11637.5041568199. The cubic root of 135431503 is about 513.5387654838.

The spelling of 135431503 in words is "one hundred thirty-five million, four hundred thirty-one thousand, five hundred three".