235413509 has 2 divisors, whose sum is σ = 235413510. Its totient is φ = 235413508.

The previous prime is 235413463. The next prime is 235413511. The reversal of 235413509 is 905314532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193293409 + 42120100 = 13903^2 + 6490^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-235413509 is a prime.

Together with 235413511, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (235413109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117706754 + 117706755.

It is an arithmetic number, because the mean of its divisors is an integer number (117706755).

Almost surely, 2^235413509 is an apocalyptic number.

It is an amenable number.

235413509 is a deficient number, since it is larger than the sum of its proper divisors (1).

235413509 is an equidigital number, since it uses as much as digits as its factorization.

235413509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 235413509 is about 15343.1909653761. The cubic root of 235413509 is about 617.4623198718.

The spelling of 235413509 in words is "two hundred thirty-five million, four hundred thirteen thousand, five hundred nine".