135031817 has 2 divisors, whose sum is σ = 135031818. Its totient is φ = 135031816.

The previous prime is 135031789. The next prime is 135031829. The reversal of 135031817 is 718130531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81288256 + 53743561 = 9016^2 + 7331^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135031817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135031817.

It is not a weakly prime, because it can be changed into another prime (135031717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67515908 + 67515909.

It is an arithmetic number, because the mean of its divisors is an integer number (67515909).

Almost surely, 2^135031817 is an apocalyptic number.

It is an amenable number.

135031817 is a deficient number, since it is larger than the sum of its proper divisors (1).

135031817 is an equidigital number, since it uses as much as digits as its factorization.

135031817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 135031817 is about 11620.3191436380. The cubic root of 135031817 is about 513.0330818038.

The spelling of 135031817 in words is "one hundred thirty-five million, thirty-one thousand, eight hundred seventeen".