311011020123113 has 4 divisors (see below), whose sum is σ = 311017398445908. Its totient is φ = 311004641800320.

The previous prime is 311011020123061. The next prime is 311011020123161. The reversal of 311011020123113 is 311321020110113.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 161415322534489 + 149595697588624 = 12704933^2 + 12230932^2 .

It is a cyclic number.

It is not a de Polignac number, because 311011020123113 - 2⁸ = 311011020122857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311011020123163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3189088256 + ... + 3189185777.

It is an arithmetic number, because the mean of its divisors is an integer number (77754349611477).

Almost surely, 2^{311011020123113} is an apocalyptic number.

It is an amenable number.

311011020123113 is a deficient number, since it is larger than the sum of its proper divisors (6378322795).

311011020123113 is an equidigital number, since it uses as much as digits as its factorization.

311011020123113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6378322794.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 311011020123113 its reverse (311321020110113), we get a palindrome (622332040233226).

The spelling of 311011020123113 in words is "three hundred eleven trillion, eleven billion, twenty million, one hundred twenty-three thousand, one hundred thirteen".