203431242211 has 2 divisors, whose sum is σ = 203431242212. Its totient is φ = 203431242210.

The previous prime is 203431242193. The next prime is 203431242293. The reversal of 203431242211 is 112242134302.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203431242211 is a prime.

It is a super-3 number, since 3×203431242211³ (a number of 35 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (203431242011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101715621105 + 101715621106.

It is an arithmetic number, because the mean of its divisors is an integer number (101715621106).

Almost surely, 2^203431242211 is an apocalyptic number.

203431242211 is a deficient number, since it is larger than the sum of its proper divisors (1).

203431242211 is an equidigital number, since it uses as much as digits as its factorization.

203431242211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 203431242211 its reverse (112242134302), we get a palindrome (315673376513).

The spelling of 203431242211 in words is "two hundred three billion, four hundred thirty-one million, two hundred forty-two thousand, two hundred eleven".