311231011101061 has 2 divisors, whose sum is σ = 311231011101062. Its totient is φ = 311231011101060.

The previous prime is 311231011101053. The next prime is 311231011101077. The reversal of 311231011101061 is 160101110132113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 306200791976836 + 5030219124225 = 17498594^2 + 2242815^2 .

It is a cyclic number.

It is not a de Polignac number, because 311231011101061 - 2³ = 311231011101053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311231011101011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155615505550530 + 155615505550531.

It is an arithmetic number, because the mean of its divisors is an integer number (155615505550531).

Almost surely, 2^{311231011101061} is an apocalyptic number.

It is an amenable number.

311231011101061 is a deficient number, since it is larger than the sum of its proper divisors (1).

311231011101061 is an equidigital number, since it uses as much as digits as its factorization.

311231011101061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 22.

Adding to 311231011101061 its reverse (160101110132113), we get a palindrome (471332121233174).

The spelling of 311231011101061 in words is "three hundred eleven trillion, two hundred thirty-one billion, eleven million, one hundred one thousand, sixty-one".