20332231013231 has 4 divisors (see below), whose sum is σ = 21402348435000. Its totient is φ = 19262113591464.

The previous prime is 20332231013201. The next prime is 20332231013243. The reversal of 20332231013231 is 13231013223302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20332231013231 - 2²² = 20332226818927 is a prime.

It is a super-2 number, since 2×20332231013231² (a number of 27 digits) contains 22 as substring.

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 20332231013231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20332231013201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 535058710856 + ... + 535058710893.

It is an arithmetic number, because the mean of its divisors is an integer number (5350587108750).

Almost surely, 2^{20332231013231} is an apocalyptic number.

20332231013231 is a deficient number, since it is larger than the sum of its proper divisors (1070117421769).

20332231013231 is a wasteful number, since it uses less digits than its factorization.

20332231013231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070117421768.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 20332231013231 its reverse (13231013223302), we get a palindrome (33563244236533).

The spelling of 20332231013231 in words is "twenty trillion, three hundred thirty-two billion, two hundred thirty-one million, thirteen thousand, two hundred thirty-one".