20344131423 has 32 divisors (see below), whose sum is σ = 37576465920. Its totient is φ = 10568378880.

The previous prime is 20344131377. The next prime is 20344131469. The reversal of 20344131423 is 32413144302.

20344131423 is a `hidden beast` number, since 2 + 0 + 344 + 1 + 314 + 2 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (20344131377) and next prime (20344131469).

It is not a de Polignac number, because 20344131423 - 2¹⁰ = 20344130399 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20344131923) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4890690 + ... + 4894847.

It is an arithmetic number, because the mean of its divisors is an integer number (1174264560).

Almost surely, 2^20344131423 is an apocalyptic number.

20344131423 is a deficient number, since it is larger than the sum of its proper divisors (17232334497).

20344131423 is a wasteful number, since it uses less digits than its factorization.

20344131423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9785564 (or 9785558 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 20344131423 its reverse (32413144302), we get a palindrome (52757275725).

It can be divided in two parts, 20 and 344131423, that added together give a palindrome (344131443).

The spelling of 20344131423 in words is "twenty billion, three hundred forty-four million, one hundred thirty-one thousand, four hundred twenty-three".