203112303311 has 2 divisors, whose sum is σ = 203112303312. Its totient is φ = 203112303310.

The previous prime is 203112303271. The next prime is 203112303319. The reversal of 203112303311 is 113303211302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 203112303311 - 2²⁶ = 203045194447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203112303319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101556151655 + 101556151656.

It is an arithmetic number, because the mean of its divisors is an integer number (101556151656).

Almost surely, 2^203112303311 is an apocalyptic number.

203112303311 is a deficient number, since it is larger than the sum of its proper divisors (1).

203112303311 is an equidigital number, since it uses as much as digits as its factorization.

203112303311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 203112303311 its reverse (113303211302), we get a palindrome (316415514613).

The spelling of 203112303311 in words is "two hundred three billion, one hundred twelve million, three hundred three thousand, three hundred eleven".