135430421231 has 4 divisors (see below), whose sum is σ = 154777624272. Its totient is φ = 116083218192.

The previous prime is 135430421221. The next prime is 135430421237. The reversal of 135430421231 is 132124034531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132124034531 = 18121 ⋅7291211.

It is a cyclic number.

It is not a de Polignac number, because 135430421231 - 2²² = 135426226927 is a prime.

It is a super-2 number, since 2×135430421231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135430421194 and 135430421203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135430421237) 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, 9673601510 + ... + 9673601523.

It is an arithmetic number, because the mean of its divisors is an integer number (38694406068).

Almost surely, 2^135430421231 is an apocalyptic number.

135430421231 is a deficient number, since it is larger than the sum of its proper divisors (19347203041).

135430421231 is an equidigital number, since it uses as much as digits as its factorization.

135430421231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19347203040.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 135430421231 its reverse (132124034531), we get a palindrome (267554455762).

The spelling of 135430421231 in words is "one hundred thirty-five billion, four hundred thirty million, four hundred twenty-one thousand, two hundred thirty-one".