135224344431 has 20 divisors (see below), whose sum is σ = 220365599784. Its totient is φ = 81954147600.

The previous prime is 135224344403. The next prime is 135224344447. The reversal of 135224344431 is 134443422531.

135224344431 is a `hidden beast` number, since 13 + 522 + 43 + 44 + 43 + 1 = 666.

It is not a de Polignac number, because 135224344431 - 2¹⁴ = 135224328047 is a prime.

It is a super-2 number, since 2×135224344431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135224344831) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 75882580 + ... + 75884361.

Almost surely, 2^135224344431 is an apocalyptic number.

135224344431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

135224344431 is a deficient number, since it is larger than the sum of its proper divisors (85141255353).

135224344431 is a wasteful number, since it uses less digits than its factorization.

135224344431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151766964 (or 151766955 counting only the distinct ones).

The product of its digits is 138240, while the sum is 36.

Adding to 135224344431 its reverse (134443422531), we get a palindrome (269667766962).

The spelling of 135224344431 in words is "one hundred thirty-five billion, two hundred twenty-four million, three hundred forty-four thousand, four hundred thirty-one".