135304431 has 4 divisors (see below), whose sum is σ = 180405912. Its totient is φ = 90202952.

The previous prime is 135304397. The next prime is 135304439. The reversal of 135304431 is 134403531.

It is a happy number.

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 135304431 - 2⁷ = 135304303 is a prime.

It is a super-2 number, since 2×135304431² = 36614578096467522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135304439) 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, 22550736 + ... + 22550741.

It is an arithmetic number, because the mean of its divisors is an integer number (45101478).

Almost surely, 2^135304431 is an apocalyptic number.

135304431 is a deficient number, since it is larger than the sum of its proper divisors (45101481).

135304431 is an equidigital number, since it uses as much as digits as its factorization.

135304431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45101480.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 135304431 is about 11632.0432856829. The cubic root of 135304431 is about 513.3781016877.

Adding to 135304431 its reverse (134403531), we get a palindrome (269707962).

The spelling of 135304431 in words is "one hundred thirty-five million, three hundred four thousand, four hundred thirty-one".