320795261 has 4 divisors (see below), whose sum is σ = 321382272. Its totient is φ = 320208252.

The previous prime is 320795243. The next prime is 320795281. The reversal of 320795261 is 162597023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 162597023 = 2399 ⋅67777.

It is a cyclic number.

It is not a de Polignac number, because 320795261 - 2¹⁰ = 320794237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320795201) 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, 292685 + ... + 293778.

It is an arithmetic number, because the mean of its divisors is an integer number (80345568).

Almost surely, 2^320795261 is an apocalyptic number.

It is an amenable number.

320795261 is a deficient number, since it is larger than the sum of its proper divisors (587011).

320795261 is an equidigital number, since it uses as much as digits as its factorization.

320795261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587010.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 320795261 is about 17910.7582474891. The cubic root of 320795261 is about 684.5565254274.

The spelling of 320795261 in words is "three hundred twenty million, seven hundred ninety-five thousand, two hundred sixty-one".