321131113002 has 96 divisors (see below), whose sum is σ = 830929042944. Its totient is φ = 91051225200.

The previous prime is 321131113001. The next prime is 321131113049. The reversal of 321131113002 is 200311131123.

321131113002 is a `hidden beast` number, since 321 + 1 + 31 + 11 + 300 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (321131113001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 85377 + ... + 805947.

It is an arithmetic number, because the mean of its divisors is an integer number (8655510864).

Almost surely, 2^321131113002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321131113002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (415464521472).

321131113002 is an abundant number, since it is smaller than the sum of its proper divisors (509797929942).

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

321131113002 is a wasteful number, since it uses less digits than its factorization.

321131113002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720726 (or 720714 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 321131113002 its reverse (200311131123), we get a palindrome (521442244125).

The spelling of 321131113002 in words is "three hundred twenty-one billion, one hundred thirty-one million, one hundred thirteen thousand, two".