135431463 has 4 divisors (see below), whose sum is σ = 180575288. Its totient is φ = 90287640.

The previous prime is 135431431. The next prime is 135431473. The reversal of 135431463 is 364134531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 364134531 = 3 ⋅121378177.

It is not a de Polignac number, because 135431463 - 2⁵ = 135431431 is a prime.

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 135431463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135431423) 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, 22571908 + ... + 22571913.

It is an arithmetic number, because the mean of its divisors is an integer number (45143822).

Almost surely, 2^135431463 is an apocalyptic number.

135431463 is a deficient number, since it is larger than the sum of its proper divisors (45143825).

135431463 is an equidigital number, since it uses as much as digits as its factorization.

135431463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45143824.

The product of its digits is 12960, while the sum is 30.

The square root of 135431463 is about 11637.5024382382. The cubic root of 135431463 is about 513.5387149255.

Adding to 135431463 its reverse (364134531), we get a palindrome (499565994).

The spelling of 135431463 in words is "one hundred thirty-five million, four hundred thirty-one thousand, four hundred sixty-three".