311032220232 has 32 divisors (see below), whose sum is σ = 779821437600. Its totient is φ = 103378621824.

The previous prime is 311032220231. The next prime is 311032220243. The reversal of 311032220232 is 232022230113.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 311032220199 and 311032220208.

It is not an unprimeable number, because it can be changed into a prime (311032220231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18665557 + ... + 18682212.

It is an arithmetic number, because the mean of its divisors is an integer number (24369419925).

Almost surely, 2^311032220232 is an apocalyptic number.

It is an amenable number.

311032220232 is an abundant number, since it is smaller than the sum of its proper divisors (468789217368).

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

311032220232 is a wasteful number, since it uses less digits than its factorization.

311032220232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37348125 (or 37348121 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 311032220232 its reverse (232022230113), we get a palindrome (543054450345).

The spelling of 311032220232 in words is "three hundred eleven billion, thirty-two million, two hundred twenty thousand, two hundred thirty-two".