205321441231 has 2 divisors, whose sum is σ = 205321441232. Its totient is φ = 205321441230.

The previous prime is 205321441201. The next prime is 205321441307. The reversal of 205321441231 is 132144123502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 205321441231 - 2¹³ = 205321433039 is a prime.

It is a super-2 number, since 2×205321441231² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 205321441231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205321441201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102660720615 + 102660720616.

It is an arithmetic number, because the mean of its divisors is an integer number (102660720616).

Almost surely, 2^205321441231 is an apocalyptic number.

205321441231 is a deficient number, since it is larger than the sum of its proper divisors (1).

205321441231 is an equidigital number, since it uses as much as digits as its factorization.

205321441231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 205321441231 its reverse (132144123502), we get a palindrome (337465564733).

The spelling of 205321441231 in words is "two hundred five billion, three hundred twenty-one million, four hundred forty-one thousand, two hundred thirty-one".