345233261 has 2 divisors, whose sum is σ = 345233262. Its totient is φ = 345233260.

The previous prime is 345233257. The next prime is 345233281. The reversal of 345233261 is 162332543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 237468100 + 107765161 = 15410^2 + 10381^2 .

It is a cyclic number.

It is not a de Polignac number, because 345233261 - 2² = 345233257 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345233281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172616630 + 172616631.

It is an arithmetic number, because the mean of its divisors is an integer number (172616631).

Almost surely, 2^345233261 is an apocalyptic number.

It is an amenable number.

345233261 is a deficient number, since it is larger than the sum of its proper divisors (1).

345233261 is an equidigital number, since it uses as much as digits as its factorization.

345233261 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 345233261 is about 18580.4537350410. The cubic root of 345233261 is about 701.5159398379.

The spelling of 345233261 in words is "three hundred forty-five million, two hundred thirty-three thousand, two hundred sixty-one".