16312017 has 4 divisors (see below), whose sum is σ = 21749360. Its totient is φ = 10874676.

The previous prime is 16312003. The next prime is 16312019. The reversal of 16312017 is 71021361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71021361 = 3 ⋅23673787.

It is not a de Polignac number, because 16312017 - 2⁴ = 16312001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16311984 and 16312002.

It is not an unprimeable number, because it can be changed into a prime (16312019) 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, 2718667 + ... + 2718672.

It is an arithmetic number, because the mean of its divisors is an integer number (5437340).

Almost surely, 2^16312017 is an apocalyptic number.

It is an amenable number.

16312017 is a deficient number, since it is larger than the sum of its proper divisors (5437343).

16312017 is an equidigital number, since it uses as much as digits as its factorization.

16312017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5437342.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 16312017 is about 4038.8138110094. The cubic root of 16312017 is about 253.6116629707.

Adding to 16312017 its reverse (71021361), we get a palindrome (87333378).

The spelling of 16312017 in words is "sixteen million, three hundred twelve thousand, seventeen".