328301261 has 4 divisors (see below), whose sum is σ = 328359900. Its totient is φ = 328242624.

The previous prime is 328301249. The next prime is 328301291. The reversal of 328301261 is 162103823.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 170798761 + 157502500 = 13069^2 + 12550^2 .

It is a cyclic number.

It is not a de Polignac number, because 328301261 - 2¹⁴ = 328284877 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 328301261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328301291) 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, 19916 + ... + 32453.

It is an arithmetic number, because the mean of its divisors is an integer number (82089975).

Almost surely, 2^328301261 is an apocalyptic number.

It is an amenable number.

328301261 is a deficient number, since it is larger than the sum of its proper divisors (58639).

328301261 is an equidigital number, since it uses as much as digits as its factorization.

328301261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58638.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 328301261 is about 18119.0855453580. The cubic root of 328301261 is about 689.8545243964.

The spelling of 328301261 in words is "three hundred twenty-eight million, three hundred one thousand, two hundred sixty-one".