135036431 has 4 divisors (see below), whose sum is σ = 135930864. Its totient is φ = 134142000.

The previous prime is 135036409. The next prime is 135036437. The reversal of 135036431 is 134630531.

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 135036431 - 2¹⁴ = 135020047 is a prime.

It is a super-2 number, since 2×135036431² = 36469675394435522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135036431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135036437) 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, 446990 + ... + 447291.

It is an arithmetic number, because the mean of its divisors is an integer number (33982716).

Almost surely, 2^135036431 is an apocalyptic number.

135036431 is a deficient number, since it is larger than the sum of its proper divisors (894433).

135036431 is an equidigital number, since it uses as much as digits as its factorization.

135036431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894432.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 135036431 is about 11620.5176734946. The cubic root of 135036431 is about 513.0389251370.

Adding to 135036431 its reverse (134630531), we get a palindrome (269666962).

The spelling of 135036431 in words is "one hundred thirty-five million, thirty-six thousand, four hundred thirty-one".