20310120312321 has 32 divisors (see below), whose sum is σ = 30980168928000. Its totient is φ = 11594008293120.

The previous prime is 20310120312271. The next prime is 20310120312337. The reversal of 20310120312321 is 12321302101302.

It is not a de Polignac number, because 20310120312321 - 2¹⁷ = 20310120181249 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (20310120312121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89048095 + ... + 89275883.

It is an arithmetic number, because the mean of its divisors is an integer number (968130279000).

Almost surely, 2^{20310120312321} is an apocalyptic number.

20310120312321 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20310120312321 is a deficient number, since it is larger than the sum of its proper divisors (10670048615679).

20310120312321 is a wasteful number, since it uses less digits than its factorization.

20310120312321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232089.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 20310120312321 its reverse (12321302101302), we get a palindrome (32631422413623).

The spelling of 20310120312321 in words is "twenty trillion, three hundred ten billion, one hundred twenty million, three hundred twelve thousand, three hundred twenty-one".