135042214231 has 4 divisors (see below), whose sum is σ = 135282076632. Its totient is φ = 134802351832.

The previous prime is 135042214213. The next prime is 135042214249. The reversal of 135042214231 is 132412240531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132412240531 = 110731 ⋅1195801.

It is an interprime number because it is at equal distance from previous prime (135042214213) and next prime (135042214249).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135042214231 is a prime.

It is a super-2 number, since 2×135042214231² (a number of 23 digits) 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 135042214231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135042214631) 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, 119930356 + ... + 119931481.

It is an arithmetic number, because the mean of its divisors is an integer number (33820519158).

Almost surely, 2^135042214231 is an apocalyptic number.

135042214231 is a deficient number, since it is larger than the sum of its proper divisors (239862401).

135042214231 is an equidigital number, since it uses as much as digits as its factorization.

135042214231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239862400.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 135042214231 its reverse (132412240531), we get a palindrome (267454454762).

The spelling of 135042214231 in words is "one hundred thirty-five billion, forty-two million, two hundred fourteen thousand, two hundred thirty-one".