311230201332 has 96 divisors (see below), whose sum is σ = 791102188800. Its totient is φ = 94931730432.

The previous prime is 311230201313. The next prime is 311230201333. The reversal of 311230201332 is 233102032113.

It is a junction number, because it is equal to n+sod(n) for n = 311230201299 and 311230201308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311230201333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 694068 + ... + 1050804.

It is an arithmetic number, because the mean of its divisors is an integer number (8240647800).

Almost surely, 2^311230201332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 311230201332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (395551094400).

311230201332 is an abundant number, since it is smaller than the sum of its proper divisors (479871987468).

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

311230201332 is a wasteful number, since it uses less digits than its factorization.

311230201332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356905 (or 356903 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 311230201332 its reverse (233102032113), we get a palindrome (544332233445).

The spelling of 311230201332 in words is "three hundred eleven billion, two hundred thirty million, two hundred one thousand, three hundred thirty-two".