261234353 has 2 divisors, whose sum is σ = 261234354. Its totient is φ = 261234352.

The previous prime is 261234343. The next prime is 261234397. The reversal of 261234353 is 353432162.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 197346304 + 63888049 = 14048^2 + 7993^2 .

It is a cyclic number.

It is not a de Polignac number, because 261234353 - 2¹² = 261230257 is a prime.

It is equal to p_14259611 and since 261234353 and 14259611 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (261234343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130617176 + 130617177.

It is an arithmetic number, because the mean of its divisors is an integer number (130617177).

Almost surely, 2^261234353 is an apocalyptic number.

It is an amenable number.

261234353 is a deficient number, since it is larger than the sum of its proper divisors (1).

261234353 is an equidigital number, since it uses as much as digits as its factorization.

261234353 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 29.

The square root of 261234353 is about 16162.7458372642. The cubic root of 261234353 is about 639.2588694662.

The spelling of 261234353 in words is "two hundred sixty-one million, two hundred thirty-four thousand, three hundred fifty-three".