20032123431331 has 16 divisors (see below), whose sum is σ = 23177338444800. Its totient is φ = 17111170660480.

The previous prime is 20032123431329. The next prime is 20032123431349. The reversal of 20032123431331 is 13313432123002.

It is a cyclic number.

It is not a de Polignac number, because 20032123431331 - 2¹ = 20032123431329 is a prime.

It is a super-2 number, since 2×20032123431331² (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 20032123431331.

It is not an unprimeable number, because it can be changed into a prime (20032123431311) 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, 89306731 + ... + 89530756.

It is an arithmetic number, because the mean of its divisors is an integer number (1448583652800).

Almost surely, 2^{20032123431331} is an apocalyptic number.

20032123431331 is a deficient number, since it is larger than the sum of its proper divisors (3145215013469).

20032123431331 is a wasteful number, since it uses less digits than its factorization.

20032123431331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178838114.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 20032123431331 its reverse (13313432123002), we get a palindrome (33345555554333).

The spelling of 20032123431331 in words is "twenty trillion, thirty-two billion, one hundred twenty-three million, four hundred thirty-one thousand, three hundred thirty-one".