203431242011 has 2 divisors, whose sum is σ = 203431242012. Its totient is φ = 203431242010.

The previous prime is 203431241989. The next prime is 203431242019. The reversal of 203431242011 is 110242134302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 203431242011 - 2³⁰ = 202357500187 is a prime.

It is a super-2 number, since 2×203431242011² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (203431242019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101715621005 + 101715621006.

It is an arithmetic number, because the mean of its divisors is an integer number (101715621006).

Almost surely, 2^203431242011 is an apocalyptic number.

203431242011 is a deficient number, since it is larger than the sum of its proper divisors (1).

203431242011 is an equidigital number, since it uses as much as digits as its factorization.

203431242011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 203431242011 its reverse (110242134302), we get a palindrome (313673376313).

The spelling of 203431242011 in words is "two hundred three billion, four hundred thirty-one million, two hundred forty-two thousand, eleven".