311131021023323 has 16 divisors (see below), whose sum is σ = 313059739981824. Its totient is φ = 309205485452640.

The previous prime is 311131021023181. The next prime is 311131021023337. The reversal of 311131021023323 is 323320120131113.

It is a cyclic number.

It is not a de Polignac number, because 311131021023323 - 2¹⁰ = 311131021022299 is a prime.

It is a super-2 number, since 2×311131021023323² (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 = 311131021023292 and 311131021023301.

It is not an unprimeable number, because it can be changed into a prime (311131021023523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2075972636 + ... + 2076122502.

It is an arithmetic number, because the mean of its divisors is an integer number (19566233748864).

Almost surely, 2^{311131021023323} is an apocalyptic number.

311131021023323 is a deficient number, since it is larger than the sum of its proper divisors (1928718958501).

311131021023323 is a wasteful number, since it uses less digits than its factorization.

311131021023323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160402.

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

Adding to 311131021023323 its reverse (323320120131113), we get a palindrome (634451141154436).

The spelling of 311131021023323 in words is "three hundred eleven trillion, one hundred thirty-one billion, twenty-one million, twenty-three thousand, three hundred twenty-three".