16311047 has 4 divisors (see below), whose sum is σ = 16534560. Its totient is φ = 16087536.

The previous prime is 16311013. The next prime is 16311049. The reversal of 16311047 is 74011361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74011361 = 61 ⋅1213301.

It is a cyclic number.

It is not a de Polignac number, because 16311047 - 2¹⁰ = 16310023 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16311049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111647 + ... + 111792.

It is an arithmetic number, because the mean of its divisors is an integer number (4133640).

Almost surely, 2^16311047 is an apocalyptic number.

16311047 is a deficient number, since it is larger than the sum of its proper divisors (223513).

16311047 is an equidigital number, since it uses as much as digits as its factorization.

16311047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223512.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 16311047 is about 4038.6937244609. The cubic root of 16311047 is about 253.6066358346.

The spelling of 16311047 in words is "sixteen million, three hundred eleven thousand, forty-seven".