135125154431 has 2 divisors, whose sum is σ = 135125154432. Its totient is φ = 135125154430.

The previous prime is 135125154403. The next prime is 135125154467. The reversal of 135125154431 is 134451521531.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (134451521531) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135125154431 is a prime.

It is a super-2 number, since 2×135125154431² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 135125154391 and 135125154400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135125154401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67562577215 + 67562577216.

It is an arithmetic number, because the mean of its divisors is an integer number (67562577216).

Almost surely, 2^135125154431 is an apocalyptic number.

135125154431 is a deficient number, since it is larger than the sum of its proper divisors (1).

135125154431 is an equidigital number, since it uses as much as digits as its factorization.

135125154431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36000, while the sum is 35.

Adding to 135125154431 its reverse (134451521531), we get a palindrome (269576675962).

The spelling of 135125154431 in words is "one hundred thirty-five billion, one hundred twenty-five million, one hundred fifty-four thousand, four hundred thirty-one".