1201311102311 has 2 divisors, whose sum is σ = 1201311102312. Its totient is φ = 1201311102310.

The previous prime is 1201311102287. The next prime is 1201311102331. The reversal of 1201311102311 is 1132011131021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201311102311 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1201311102311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201311102331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600655551155 + 600655551156.

It is an arithmetic number, because the mean of its divisors is an integer number (600655551156).

Almost surely, 2^{1201311102311} is an apocalyptic number.

1201311102311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201311102311 is an equidigital number, since it uses as much as digits as its factorization.

1201311102311 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 17.

Adding to 1201311102311 its reverse (1132011131021), we get a palindrome (2333322233332).

The spelling of 1201311102311 in words is "one trillion, two hundred one billion, three hundred eleven million, one hundred two thousand, three hundred eleven".