16380231 has 24 divisors (see below), whose sum is σ = 26524800. Its totient is φ = 8806272.

The previous prime is 16380191. The next prime is 16380253. The reversal of 16380231 is 13208361.

It is not a de Polignac number, because 16380231 - 2⁶ = 16380167 is a prime.

It is a super-2 number, since 2×16380231² = 536623935226722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16380031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4720 + ... + 7418.

It is an arithmetic number, because the mean of its divisors is an integer number (1105200).

Almost surely, 2^16380231 is an apocalyptic number.

16380231 is a deficient number, since it is larger than the sum of its proper divisors (10144569).

16380231 is a wasteful number, since it uses less digits than its factorization.

16380231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2743 (or 2726 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 16380231 is about 4047.2498069677. The cubic root of 16380231 is about 253.9646911880.

Adding to 16380231 its reverse (13208361), we get a palindrome (29588592).

The spelling of 16380231 in words is "sixteen million, three hundred eighty thousand, two hundred thirty-one".