20331321332331 has 16 divisors (see below), whose sum is σ = 27396417679488. Its totient is φ = 13410833654400.

The previous prime is 20331321332279. The next prime is 20331321332359. The reversal of 20331321332331 is 13323312313302.

It is not a de Polignac number, because 20331321332331 - 2¹⁴ = 20331321315947 is a prime.

It is a super-2 number, since 2×20331321332331² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20331321332131) 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, 76623705 + ... + 76888586.

It is an arithmetic number, because the mean of its divisors is an integer number (1712276104968).

Almost surely, 2^{20331321332331} is an apocalyptic number.

20331321332331 is a deficient number, since it is larger than the sum of its proper divisors (7065096347157).

20331321332331 is a wasteful number, since it uses less digits than its factorization.

20331321332331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153512762.

The product of its (nonzero) digits is 17496, while the sum is 30.

Adding to 20331321332331 its reverse (13323312313302), we get a palindrome (33654633645633).

The spelling of 20331321332331 in words is "twenty trillion, three hundred thirty-one billion, three hundred twenty-one million, three hundred thirty-two thousand, three hundred thirty-one".