135304256231 has 2 divisors, whose sum is σ = 135304256232. Its totient is φ = 135304256230.

The previous prime is 135304256123. The next prime is 135304256233. The reversal of 135304256231 is 132652403531.

It is a happy number.

Together with previous prime (135304256123) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135304256231 - 2²² = 135300061927 is a prime.

It is a super-2 number, since 2×135304256231² (a number of 23 digits) contains 22 as substring.

Together with 135304256233, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 135304256191 and 135304256200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135304256233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67652128115 + 67652128116.

It is an arithmetic number, because the mean of its divisors is an integer number (67652128116).

Almost surely, 2^135304256231 is an apocalyptic number.

135304256231 is a deficient number, since it is larger than the sum of its proper divisors (1).

135304256231 is an equidigital number, since it uses as much as digits as its factorization.

135304256231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 35.

Adding to 135304256231 its reverse (132652403531), we get a palindrome (267956659762).

The spelling of 135304256231 in words is "one hundred thirty-five billion, three hundred four million, two hundred fifty-six thousand, two hundred thirty-one".