2231032021 has 2 divisors, whose sum is σ = 2231032022. Its totient is φ = 2231032020.

The previous prime is 2231031977. The next prime is 2231032033. The reversal of 2231032021 is 1202301322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2180423025 + 50608996 = 46695^2 + 7114^2 .

It is a cyclic number.

It is not a de Polignac number, because 2231032021 - 2¹⁷ = 2230900949 is a prime.

It is a super-3 number, since 3×2231032021³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2231031986 and 2231032004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2231032061) 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, 1115516010 + 1115516011.

It is an arithmetic number, because the mean of its divisors is an integer number (1115516011).

Almost surely, 2^2231032021 is an apocalyptic number.

It is an amenable number.

2231032021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2231032021 is an equidigital number, since it uses as much as digits as its factorization.

2231032021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2231032021 is about 47233.8016784590. The cubic root of 2231032021 is about 1306.6780663818.

Adding to 2231032021 its reverse (1202301322), we get a palindrome (3433333343).

The spelling of 2231032021 in words is "two billion, two hundred thirty-one million, thirty-two thousand, twenty-one".