321321052690 has 48 divisors (see below), whose sum is σ = 637570616256. Its totient is φ = 116507140640.

The previous prime is 321321052687. The next prime is 321321052693. The reversal of 321321052690 is 96250123123.

It is an interprime number because it is at equal distance from previous prime (321321052687) and next prime (321321052693).

It is a super-2 number, since 2×321321052690² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (321321052693) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37227 + ... + 802513.

It is an arithmetic number, because the mean of its divisors is an integer number (13282721172).

Almost surely, 2^321321052690 is an apocalyptic number.

321321052690 is a deficient number, since it is larger than the sum of its proper divisors (316249563566).

321321052690 is a wasteful number, since it uses less digits than its factorization.

321321052690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765663 (or 765652 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 34.

The spelling of 321321052690 in words is "three hundred twenty-one billion, three hundred twenty-one million, fifty-two thousand, six hundred ninety".