201311101 has 2 divisors, whose sum is σ = 201311102. Its totient is φ = 201311100.

The previous prime is 201311087. The next prime is 201311113. The reversal of 201311101 is 101113102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 196140025 + 5171076 = 14005^2 + 2274^2 .

It is a cyclic number.

It is not a de Polignac number, because 201311101 - 2²³ = 192922493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201311141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100655550 + 100655551.

It is an arithmetic number, because the mean of its divisors is an integer number (100655551).

Almost surely, 2^201311101 is an apocalyptic number.

It is an amenable number.

201311101 is a deficient number, since it is larger than the sum of its proper divisors (1).

201311101 is an equidigital number, since it uses as much as digits as its factorization.

201311101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 201311101 is about 14188.4143229608. The cubic root of 201311101 is about 586.0786595478.

Adding to 201311101 its reverse (101113102), we get a palindrome (302424203).

The spelling of 201311101 in words is "two hundred one million, three hundred eleven thousand, one hundred one".