201011012311 has 2 divisors, whose sum is σ = 201011012312. Its totient is φ = 201011012310.

The previous prime is 201011012309. The next prime is 201011012329. The reversal of 201011012311 is 113210110102.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201011012311 - 2¹ = 201011012309 is a prime.

It is a super-3 number, since 3×201011012311³ (a number of 35 digits) contains 333 as substring.

Together with 201011012309, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 201011012291 and 201011012300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201011012341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100505506155 + 100505506156.

It is an arithmetic number, because the mean of its divisors is an integer number (100505506156).

Almost surely, 2^201011012311 is an apocalyptic number.

201011012311 is a deficient number, since it is larger than the sum of its proper divisors (1).

201011012311 is an equidigital number, since it uses as much as digits as its factorization.

201011012311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 201011012311 its reverse (113210110102), we get a palindrome (314221122413).

The spelling of 201011012311 in words is "two hundred one billion, eleven million, twelve thousand, three hundred eleven".