2281328251 has 4 divisors (see below), whose sum is σ = 2287903032. Its totient is φ = 2274753472.

The previous prime is 2281328249. The next prime is 2281328261. The reversal of 2281328251 is 1528231822.

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

It is a cyclic number.

It is not a de Polignac number, because 2281328251 - 2¹ = 2281328249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2281328261) 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, 3286870 + ... + 3287563.

It is an arithmetic number, because the mean of its divisors is an integer number (571975758).

Almost surely, 2^2281328251 is an apocalyptic number.

2281328251 is a deficient number, since it is larger than the sum of its proper divisors (6574781).

2281328251 is an equidigital number, since it uses as much as digits as its factorization.

2281328251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6574780.

The product of its digits is 15360, while the sum is 34.

The square root of 2281328251 is about 47763.2520982397. The cubic root of 2281328251 is about 1316.4244086112.

The spelling of 2281328251 in words is "two billion, two hundred eighty-one million, three hundred twenty-eight thousand, two hundred fifty-one".