311201121212023 has 4 divisors (see below), whose sum is σ = 355658424242320. Its totient is φ = 266743818181728.

The previous prime is 311201121212017. The next prime is 311201121212041. The reversal of 311201121212023 is 320212121102113.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 311201121212023 - 2⁹ = 311201121211511 is a prime.

It is a super-2 number, since 2×311201121212023² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311201121211985 and 311201121212003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311201121212123) 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, 22228651515138 + ... + 22228651515151.

It is an arithmetic number, because the mean of its divisors is an integer number (88914606060580).

Almost surely, 2^{311201121212023} is an apocalyptic number.

311201121212023 is a deficient number, since it is larger than the sum of its proper divisors (44457303030297).

311201121212023 is an equidigital number, since it uses as much as digits as its factorization.

311201121212023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44457303030296.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 311201121212023 its reverse (320212121102113), we get a palindrome (631413242314136).

The spelling of 311201121212023 in words is "three hundred eleven trillion, two hundred one billion, one hundred twenty-one million, two hundred twelve thousand, twenty-three".