311230123120133 has 6 divisors (see below), whose sum is σ = 362043204445926. Its totient is φ = 266768676960072.

The previous prime is 311230123120121. The next prime is 311230123120151. The reversal of 311230123120133 is 331021321032113.

It can be written as a sum of positive squares in only one way, i.e., 305905626864964 + 5324496255169 = 17490158^2 + 2307487^2 .

It is not a de Polignac number, because 311230123120133 - 2¹⁴ = 311230123103749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311230123120183) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3175817582810 + ... + 3175817582907.

It is an arithmetic number, because the mean of its divisors is an integer number (60340534074321).

Almost surely, 2^{311230123120133} is an apocalyptic number.

It is an amenable number.

311230123120133 is a deficient number, since it is larger than the sum of its proper divisors (50813081325793).

311230123120133 is an equidigital number, since it uses as much as digits as its factorization.

311230123120133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6351635165731 (or 6351635165724 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 311230123120133 its reverse (331021321032113), we get a palindrome (642251444152246).

The spelling of 311230123120133 in words is "three hundred eleven trillion, two hundred thirty billion, one hundred twenty-three million, one hundred twenty thousand, one hundred thirty-three".