22131423423 has 64 divisors (see below), whose sum is σ = 35340364800. Its totient is φ = 13652115840.

The previous prime is 22131423409. The next prime is 22131423439. The reversal of 22131423423 is 32432413122.

22131423423 is a `hidden beast` number, since 2 + 2 + 1 + 314 + 2 + 342 + 3 = 666.

It is not a de Polignac number, because 22131423423 - 2¹² = 22131419327 is a prime.

It is a super-2 number, since 2×22131423423² (a number of 21 digits) contains 22 as substring.

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 (22131423023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4110193 + ... + 4115573.

It is an arithmetic number, because the mean of its divisors is an integer number (552193200).

Almost surely, 2^22131423423 is an apocalyptic number.

22131423423 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

22131423423 is a deficient number, since it is larger than the sum of its proper divisors (13208941377).

22131423423 is a wasteful number, since it uses less digits than its factorization.

22131423423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5629 (or 5623 counting only the distinct ones).

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

Adding to 22131423423 its reverse (32432413122), we get a palindrome (54563836545).

It can be divided in two parts, 2213142 and 3423, that added together give a triangular number (2216565 = T₂₁₀₅).

The spelling of 22131423423 in words is "twenty-two billion, one hundred thirty-one million, four hundred twenty-three thousand, four hundred twenty-three".