20331233312331 has 16 divisors (see below), whose sum is σ = 27154170408960. Its totient is φ = 13531232526240.

The previous prime is 20331233312323. The next prime is 20331233312347. The reversal of 20331233312331 is 13321333213302.

It is not a de Polignac number, because 20331233312331 - 2³ = 20331233312323 is a prime.

It is a super-2 number, since 2×20331233312331² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20331233312381) 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, 11457400 + ... + 13112378.

It is an arithmetic number, because the mean of its divisors is an integer number (1697135650560).

Almost surely, 2^{20331233312331} is an apocalyptic number.

20331233312331 is a deficient number, since it is larger than the sum of its proper divisors (6822937096629).

20331233312331 is a wasteful number, since it uses less digits than its factorization.

20331233312331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1661906.

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

Adding to 20331233312331 its reverse (13321333213302), we get a palindrome (33652566525633).

The spelling of 20331233312331 in words is "twenty trillion, three hundred thirty-one billion, two hundred thirty-three million, three hundred twelve thousand, three hundred thirty-one".