201131203111 has 2 divisors, whose sum is σ = 201131203112. Its totient is φ = 201131203110.

The previous prime is 201131203069. The next prime is 201131203123. The reversal of 201131203111 is 111302131102.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201131203111 - 2⁹ = 201131202599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201131200111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100565601555 + 100565601556.

It is an arithmetic number, because the mean of its divisors is an integer number (100565601556).

Almost surely, 2^201131203111 is an apocalyptic number.

201131203111 is a deficient number, since it is larger than the sum of its proper divisors (1).

201131203111 is an equidigital number, since it uses as much as digits as its factorization.

201131203111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 201131203111 its reverse (111302131102), we get a palindrome (312433334213).

The spelling of 201131203111 in words is "two hundred one billion, one hundred thirty-one million, two hundred three thousand, one hundred eleven".