135202961 has 2 divisors, whose sum is σ = 135202962. Its totient is φ = 135202960.

The previous prime is 135202931. The next prime is 135202981. The reversal of 135202961 is 169202531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80442961 + 54760000 = 8969^2 + 7400^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135202961 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (135202931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67601480 + 67601481.

It is an arithmetic number, because the mean of its divisors is an integer number (67601481).

Almost surely, 2^135202961 is an apocalyptic number.

It is an amenable number.

135202961 is a deficient number, since it is larger than the sum of its proper divisors (1).

135202961 is an equidigital number, since it uses as much as digits as its factorization.

135202961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 135202961 is about 11627.6808091726. The cubic root of 135202961 is about 513.2497355948.

The spelling of 135202961 in words is "one hundred thirty-five million, two hundred two thousand, nine hundred sixty-one".