2231084881 has 2 divisors, whose sum is σ = 2231084882. Its totient is φ = 2231084880.

The previous prime is 2231084833. The next prime is 2231084897. The reversal of 2231084881 is 1884801322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2190240000 + 40844881 = 46800^2 + 6391^2 .

It is a cyclic number.

It is not a de Polignac number, because 2231084881 - 2²¹ = 2228987729 is a prime.

It is a super-3 number, since 3×2231084881³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 2231084881.

It is not a weakly prime, because it can be changed into another prime (2231084281) 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 as a sum of consecutive naturals, namely, 1115542440 + 1115542441.

It is an arithmetic number, because the mean of its divisors is an integer number (1115542441).

Almost surely, 2^2231084881 is an apocalyptic number.

It is an amenable number.

2231084881 is a deficient number, since it is larger than the sum of its proper divisors (1).

2231084881 is an equidigital number, since it uses as much as digits as its factorization.

2231084881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24576, while the sum is 37.

The square root of 2231084881 is about 47234.3612320522. The cubic root of 2231084881 is about 1306.6883860390.

The spelling of 2231084881 in words is "two billion, two hundred thirty-one million, eighty-four thousand, eight hundred eighty-one".