135897233 has 2 divisors, whose sum is σ = 135897234. Its totient is φ = 135897232.

The previous prime is 135897221. The next prime is 135897259. The reversal of 135897233 is 332798531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89548369 + 46348864 = 9463^2 + 6808^2 .

It is a cyclic number.

It is not a de Polignac number, because 135897233 - 2⁸ = 135896977 is a prime.

It is not a weakly prime, because it can be changed into another prime (135897533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67948616 + 67948617.

It is an arithmetic number, because the mean of its divisors is an integer number (67948617).

Almost surely, 2^135897233 is an apocalyptic number.

It is an amenable number.

135897233 is a deficient number, since it is larger than the sum of its proper divisors (1).

135897233 is an equidigital number, since it uses as much as digits as its factorization.

135897233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 41.

The square root of 135897233 is about 11657.4968582453. The cubic root of 135897233 is about 514.1267546607.

The spelling of 135897233 in words is "one hundred thirty-five million, eight hundred ninety-seven thousand, two hundred thirty-three".