201111231403 has 2 divisors, whose sum is σ = 201111231404. Its totient is φ = 201111231402.

The previous prime is 201111231389. The next prime is 201111231487. The reversal of 201111231403 is 304132111102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201111231403 - 2⁵ = 201111231371 is a prime.

It is not a weakly prime, because it can be changed into another prime (201111331403) 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, 100555615701 + 100555615702.

It is an arithmetic number, because the mean of its divisors is an integer number (100555615702).

Almost surely, 2^201111231403 is an apocalyptic number.

201111231403 is a deficient number, since it is larger than the sum of its proper divisors (1).

201111231403 is an equidigital number, since it uses as much as digits as its factorization.

201111231403 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 19.

Adding to 201111231403 its reverse (304132111102), we get a palindrome (505243342505).

The spelling of 201111231403 in words is "two hundred one billion, one hundred eleven million, two hundred thirty-one thousand, four hundred three".