16231423005 has 64 divisors (see below), whose sum is σ = 33009799680. Its totient is φ = 7412954112.

The previous prime is 16231423003. The next prime is 16231423027. The reversal of 16231423005 is 50032413261.

16231423005 is a `hidden beast` number, since 1 + 6 + 231 + 423 + 0 + 0 + 5 = 666.

It is not a de Polignac number, because 16231423005 - 2¹ = 16231423003 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 16231423005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16231423001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1047877 + ... + 1063253.

It is an arithmetic number, because the mean of its divisors is an integer number (515778120).

Almost surely, 2^16231423005 is an apocalyptic number.

16231423005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16231423005 is an abundant number, since it is smaller than the sum of its proper divisors (16778376675).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16231423005 is a wasteful number, since it uses less digits than its factorization.

16231423005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16515 (or 16509 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 16231423005 its reverse (50032413261), we get a palindrome (66263836266).

The spelling of 16231423005 in words is "sixteen billion, two hundred thirty-one million, four hundred twenty-three thousand, five".