20311132304423 has 4 divisors (see below), whose sum is σ = 20311156684728. Its totient is φ = 20311107924120.

The previous prime is 20311132304383. The next prime is 20311132304431. The reversal of 20311132304423 is 32440323111302.

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 20311132304423 - 2¹⁴ = 20311132288039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20311132304123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10894613 + ... + 12621998.

It is an arithmetic number, because the mean of its divisors is an integer number (5077789171182).

Almost surely, 2^{20311132304423} is an apocalyptic number.

20311132304423 is a deficient number, since it is larger than the sum of its proper divisors (24380305).

20311132304423 is an equidigital number, since it uses as much as digits as its factorization.

20311132304423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24380304.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 20311132304423 its reverse (32440323111302), we get a palindrome (52751455415725).

The spelling of 20311132304423 in words is "twenty trillion, three hundred eleven billion, one hundred thirty-two million, three hundred four thousand, four hundred twenty-three".