16105344431 has 4 divisors (see below), whose sum is σ = 17569466664. Its totient is φ = 14641222200.

The previous prime is 16105344407. The next prime is 16105344443. The reversal of 16105344431 is 13444350161.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 16105344431 - 2¹⁴ = 16105328047 is a prime.

It is a super-2 number, since 2×16105344431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16105344481) 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, 732061100 + ... + 732061121.

It is an arithmetic number, because the mean of its divisors is an integer number (4392366666).

Almost surely, 2^16105344431 is an apocalyptic number.

16105344431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16105344431 is a deficient number, since it is larger than the sum of its proper divisors (1464122233).

16105344431 is a wasteful number, since it uses less digits than its factorization.

16105344431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1464122232.

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 16105344431 its reverse (13444350161), we get a palindrome (29549694592).

The spelling of 16105344431 in words is "sixteen billion, one hundred five million, three hundred forty-four thousand, four hundred thirty-one".