111311312010203 has 2 divisors, whose sum is σ = 111311312010204. Its totient is φ = 111311312010202.

The previous prime is 111311312010187. The next prime is 111311312010307. The reversal of 111311312010203 is 302010213113111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111311312010203 - 2⁴ = 111311312010187 is a prime.

It is a super-2 number, since 2×111311312010203² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111311312030203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55655656005101 + 55655656005102.

It is an arithmetic number, because the mean of its divisors is an integer number (55655656005102).

Almost surely, 2^{111311312010203} is an apocalyptic number.

111311312010203 is a deficient number, since it is larger than the sum of its proper divisors (1).

111311312010203 is an equidigital number, since it uses as much as digits as its factorization.

111311312010203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 111311312010203 its reverse (302010213113111), we get a palindrome (413321525123314).

The spelling of 111311312010203 in words is "one hundred eleven trillion, three hundred eleven billion, three hundred twelve million, ten thousand, two hundred three".