321321132312 has 64 divisors (see below), whose sum is σ = 814786129920. Its totient is φ = 105586685568.

The previous prime is 321321132311. The next prime is 321321132313. The reversal of 321321132312 is 213231123123.

It is an interprime number because it is at equal distance from previous prime (321321132311) and next prime (321321132313).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321321132311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142803 + ... + 814269.

It is an arithmetic number, because the mean of its divisors is an integer number (12731033280).

Almost surely, 2^321321132312 is an apocalyptic number.

It is an amenable number.

321321132312 is an abundant number, since it is smaller than the sum of its proper divisors (493464997608).

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

321321132312 is a wasteful number, since it uses less digits than its factorization.

321321132312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671760 (or 671756 counting only the distinct ones).

The product of its digits is 1296, while the sum is 24.

Adding to 321321132312 its reverse (213231123123), we get a palindrome (534552255435).

The spelling of 321321132312 in words is "three hundred twenty-one billion, three hundred twenty-one million, one hundred thirty-two thousand, three hundred twelve".