20321233231433 has 16 divisors (see below), whose sum is σ = 20836882327296. Its totient is φ = 19806544517760.

The previous prime is 20321233231423. The next prime is 20321233231483. The reversal of 20321233231433 is 33413233212302.

It is a cyclic number.

It is not a de Polignac number, because 20321233231433 - 2²⁸ = 20320964795977 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20321233231433.

It is not an unprimeable number, because it can be changed into a prime (20321233231423) 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, 227702966 + ... + 227792192.

It is an arithmetic number, because the mean of its divisors is an integer number (1302305145456).

Almost surely, 2^{20321233231433} is an apocalyptic number.

It is an amenable number.

20321233231433 is a deficient number, since it is larger than the sum of its proper divisors (515649095863).

20321233231433 is a wasteful number, since it uses less digits than its factorization.

20321233231433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94544.

The product of its (nonzero) digits is 46656, while the sum is 32.

Adding to 20321233231433 its reverse (33413233212302), we get a palindrome (53734466443735).

The spelling of 20321233231433 in words is "twenty trillion, three hundred twenty-one billion, two hundred thirty-three million, two hundred thirty-one thousand, four hundred thirty-three".