16331243 has 4 divisors (see below), whose sum is σ = 16729608. Its totient is φ = 15932880.

The previous prime is 16331221. The next prime is 16331251. The reversal of 16331243 is 34213361.

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

It is a cyclic number.

It is not a de Polignac number, because 16331243 - 2¹⁶ = 16265707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16331743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199121 + ... + 199202.

It is an arithmetic number, because the mean of its divisors is an integer number (4182402).

Almost surely, 2^16331243 is an apocalyptic number.

16331243 is a deficient number, since it is larger than the sum of its proper divisors (398365).

16331243 is an equidigital number, since it uses as much as digits as its factorization.

16331243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398364.

The product of its digits is 1296, while the sum is 23.

The square root of 16331243 is about 4041.1932643713. The cubic root of 16331243 is about 253.7112628225.

The spelling of 16331243 in words is "sixteen million, three hundred thirty-one thousand, two hundred forty-three".