311312202322 has 32 divisors (see below), whose sum is σ = 523306293120. Its totient is φ = 137649962880.

The previous prime is 311312202239. The next prime is 311312202329. The reversal of 311312202322 is 223202213113.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 311312202293 and 311312202302.

It is not an unprimeable number, because it can be changed into a prime (311312202329) 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, 3767838 + ... + 3849574.

It is an arithmetic number, because the mean of its divisors is an integer number (16353321660).

Almost surely, 2^311312202322 is an apocalyptic number.

311312202322 is a deficient number, since it is larger than the sum of its proper divisors (211994090798).

311312202322 is a wasteful number, since it uses less digits than its factorization.

311312202322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86466.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 311312202322 its reverse (223202213113), we get a palindrome (534514415435).

The spelling of 311312202322 in words is "three hundred eleven billion, three hundred twelve million, two hundred two thousand, three hundred twenty-two".