2281320999 has 48 divisors (see below), whose sum is σ = 3407339520. Its totient is φ = 1470381120.

The previous prime is 2281320983. The next prime is 2281321019. The reversal of 2281320999 is 9990231822.

It is a happy number.

It is not a de Polignac number, because 2281320999 - 2⁴ = 2281320983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2281320929) 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 in 47 ways as a sum of consecutive naturals, for example, 11943994 + ... + 11944184.

It is an arithmetic number, because the mean of its divisors is an integer number (70986240).

Almost surely, 2^2281320999 is an apocalyptic number.

2281320999 is a deficient number, since it is larger than the sum of its proper divisors (1126018521).

2281320999 is a wasteful number, since it uses less digits than its factorization.

2281320999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540 (or 537 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 2281320999 is about 47763.1761820757. The cubic root of 2281320999 is about 1316.4230137045.

The spelling of 2281320999 in words is "two billion, two hundred eighty-one million, three hundred twenty thousand, nine hundred ninety-nine".