20030321312 has 24 divisors (see below), whose sum is σ = 39440149056. Its totient is φ = 10013775552.

The previous prime is 20030321243. The next prime is 20030321321. The reversal of 20030321312 is 21312303002.

It is a super-2 number, since 2×20030321312² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215513 + ... + 294119.

It is an arithmetic number, because the mean of its divisors is an integer number (1643339544).

Almost surely, 2^20030321312 is an apocalyptic number.

It is an amenable number.

20030321312 is a deficient number, since it is larger than the sum of its proper divisors (19409827744).

20030321312 is an equidigital number, since it uses as much as digits as its factorization.

20030321312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86580 (or 86572 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20030321312 its reverse (21312303002), we get a palindrome (41342624314).

The spelling of 20030321312 in words is "twenty billion, thirty million, three hundred twenty-one thousand, three hundred twelve".