311213131332 has 48 divisors (see below), whose sum is σ = 745376084544. Its totient is φ = 101026800000.

The previous prime is 311213131331. The next prime is 311213131357. The reversal of 311213131332 is 233131312113.

It is a super-2 number, since 2×311213131332² (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 not an unprimeable number, because it can be changed into a prime (311213131331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2030794 + ... + 2178657.

It is an arithmetic number, because the mean of its divisors is an integer number (15528668428).

Almost surely, 2^311213131332 is an apocalyptic number.

It is an amenable number.

311213131332 is an abundant number, since it is smaller than the sum of its proper divisors (434162953212).

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

311213131332 is a wasteful number, since it uses less digits than its factorization.

311213131332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4209620 (or 4209618 counting only the distinct ones).

The product of its digits is 972, while the sum is 24.

Adding to 311213131332 its reverse (233131312113), we get a palindrome (544344443445).

The spelling of 311213131332 in words is "three hundred eleven billion, two hundred thirteen million, one hundred thirty-one thousand, three hundred thirty-two".