311312321322 has 32 divisors (see below), whose sum is σ = 631627559424. Its totient is φ = 102271369200.

The previous prime is 311312321303. The next prime is 311312321389. The reversal of 311312321322 is 223123213113.

It is a super-2 number, since 2×311312321322² (a number of 24 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 311312321292 and 311312321301.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1029613 + ... + 1297199.

It is an arithmetic number, because the mean of its divisors is an integer number (19738361232).

Almost surely, 2^311312321322 is an apocalyptic number.

311312321322 is an abundant number, since it is smaller than the sum of its proper divisors (320315238102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311312321322 is a wasteful number, since it uses less digits than its factorization.

311312321322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270394.

The product of its digits is 1296, while the sum is 24.

Adding to 311312321322 its reverse (223123213113), we get a palindrome (534435534435).

The spelling of 311312321322 in words is "three hundred eleven billion, three hundred twelve million, three hundred twenty-one thousand, three hundred twenty-two".