135513431 has 8 divisors (see below), whose sum is σ = 140058624. Its totient is φ = 130979160.

The previous prime is 135513407. The next prime is 135513437. The reversal of 135513431 is 134315531.

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

It is a cyclic number.

It is not a de Polignac number, because 135513431 - 2¹⁸ = 135251287 is a prime.

It is a super-2 number, since 2×135513431² = 36727779962783522, 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 135513431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135513437) 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 7 ways as a sum of consecutive naturals, for example, 28250 + ... + 32696.

It is an arithmetic number, because the mean of its divisors is an integer number (17507328).

Almost surely, 2^135513431 is an apocalyptic number.

135513431 is a deficient number, since it is larger than the sum of its proper divisors (4545193).

135513431 is an equidigital number, since it uses as much as digits as its factorization.

135513431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5461.

The product of its digits is 2700, while the sum is 26.

The square root of 135513431 is about 11641.0236233761. The cubic root of 135513431 is about 513.6422980740.

Adding to 135513431 its reverse (134315531), we get a palindrome (269828962).

The spelling of 135513431 in words is "one hundred thirty-five million, five hundred thirteen thousand, four hundred thirty-one".