20345032331323 has 16 divisors (see below), whose sum is σ = 24497956094976. Its totient is φ = 16518453541920.

The previous prime is 20345032331311. The next prime is 20345032331341. The reversal of 20345032331323 is 32313323054302.

It is a cyclic number.

It is not a de Polignac number, because 20345032331323 - 2³³ = 20336442396731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20345032331353) 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, 613413808 + ... + 613446973.

It is an arithmetic number, because the mean of its divisors is an integer number (1531122255936).

Almost surely, 2^{20345032331323} is an apocalyptic number.

20345032331323 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20345032331323 is a deficient number, since it is larger than the sum of its proper divisors (4152923763653).

20345032331323 is a wasteful number, since it uses less digits than its factorization.

20345032331323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226860914.

The product of its (nonzero) digits is 116640, while the sum is 34.

Adding to 20345032331323 its reverse (32313323054302), we get a palindrome (52658355385625).

The spelling of 20345032331323 in words is "twenty trillion, three hundred forty-five billion, thirty-two million, three hundred thirty-one thousand, three hundred twenty-three".