4131233221 has 2 divisors, whose sum is σ = 4131233222. Its totient is φ = 4131233220.

The previous prime is 4131233179. The next prime is 4131233231. The reversal of 4131233221 is 1223321314.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4119842596 + 11390625 = 64186^2 + 3375^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4131233221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4131233192 and 4131233201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4131233231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2065616610 + 2065616611.

It is an arithmetic number, because the mean of its divisors is an integer number (2065616611).

Almost surely, 2^4131233221 is an apocalyptic number.

It is an amenable number.

4131233221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4131233221 is an equidigital number, since it uses as much as digits as its factorization.

4131233221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 22.

The square root of 4131233221 is about 64274.6701352874. The cubic root of 4131233221 is about 1604.5745673529.

Adding to 4131233221 its reverse (1223321314), we get a palindrome (5354554535).

The spelling of 4131233221 in words is "four billion, one hundred thirty-one million, two hundred thirty-three thousand, two hundred twenty-one".