340252261 has 4 divisors (see below), whose sum is σ = 340349452. Its totient is φ = 340155072.

The previous prime is 340252243. The next prime is 340252277. The reversal of 340252261 is 162252043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 162252043 = 9479 ⋅17117.

It can be written as a sum of positive squares in 2 ways, for example, as 85211361 + 255040900 = 9231^2 + 15970^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340252261 is a prime.

It is a super-2 number, since 2×340252261² = 231543202231224242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340252291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43140 + ... + 50413.

It is an arithmetic number, because the mean of its divisors is an integer number (85087363).

Almost surely, 2^340252261 is an apocalyptic number.

It is an amenable number.

340252261 is a deficient number, since it is larger than the sum of its proper divisors (97191).

340252261 is an equidigital number, since it uses as much as digits as its factorization.

340252261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97190.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 340252261 is about 18445.9280330375. The cubic root of 340252261 is about 698.1257761100.

The spelling of 340252261 in words is "three hundred forty million, two hundred fifty-two thousand, two hundred sixty-one".