311321002132 has 96 divisors (see below), whose sum is σ = 656040591360. Its totient is φ = 126472008960.

The previous prime is 311321002121. The next prime is 311321002171. The reversal of 311321002132 is 231200123113.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8247133 + ... + 8284795.

It is an arithmetic number, because the mean of its divisors is an integer number (6833756160).

Almost surely, 2^311321002132 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 311321002132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (328020295680).

311321002132 is an abundant number, since it is smaller than the sum of its proper divisors (344719589228).

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

311321002132 is a wasteful number, since it uses less digits than its factorization.

311321002132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37901 (or 37899 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 311321002132 its reverse (231200123113), we get a palindrome (542521125245).

The spelling of 311321002132 in words is "three hundred eleven billion, three hundred twenty-one million, two thousand, one hundred thirty-two".