135845531 has 2 divisors, whose sum is σ = 135845532. Its totient is φ = 135845530.

The previous prime is 135845527. The next prime is 135845533. The reversal of 135845531 is 135548531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135845531 - 2² = 135845527 is a prime.

It is a super-2 number, since 2×135845531² = 36908016585343922, which contains 22 as substring.

Together with 135845533, 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 = 135845491 and 135845500.

It is not a weakly prime, because it can be changed into another prime (135845533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67922765 + 67922766.

It is an arithmetic number, because the mean of its divisors is an integer number (67922766).

Almost surely, 2^135845531 is an apocalyptic number.

135845531 is a deficient number, since it is larger than the sum of its proper divisors (1).

135845531 is an equidigital number, since it uses as much as digits as its factorization.

135845531 is an odious number, because the sum of its binary digits is odd.

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

The square root of 135845531 is about 11655.2791043372. The cubic root of 135845531 is about 514.0615466783.

The spelling of 135845531 in words is "one hundred thirty-five million, eight hundred forty-five thousand, five hundred thirty-one".