135431241 has 32 divisors (see below), whose sum is σ = 203212800. Its totient is φ = 79516800.

The previous prime is 135431239. The next prime is 135431249. The reversal of 135431241 is 142134531.

It is a happy number.

It is not a de Polignac number, because 135431241 - 2¹ = 135431239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135431249) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 268996 + ... + 269498.

It is an arithmetic number, because the mean of its divisors is an integer number (6350400).

Almost surely, 2^135431241 is an apocalyptic number.

135431241 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

135431241 is a deficient number, since it is larger than the sum of its proper divisors (67781559).

135431241 is a wasteful number, since it uses less digits than its factorization.

135431241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757.

The product of its digits is 1440, while the sum is 24.

The square root of 135431241 is about 11637.4929001052. The cubic root of 135431241 is about 513.5384343268.

Adding to 135431241 its reverse (142134531), we get a palindrome (277565772).

The spelling of 135431241 in words is "one hundred thirty-five million, four hundred thirty-one thousand, two hundred forty-one".