16312003 has 2 divisors, whose sum is σ = 16312004. Its totient is φ = 16312002.

The previous prime is 16312001. The next prime is 16312019. The reversal of 16312003 is 30021361.

It is an a-pointer prime, because the next prime (16312019) can be obtained adding 16312003 to its sum of digits (16).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16312003 - 2¹ = 16312001 is a prime.

Together with 16312001, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (16312001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8156001 + 8156002.

It is an arithmetic number, because the mean of its divisors is an integer number (8156002).

Almost surely, 2^16312003 is an apocalyptic number.

16312003 is a deficient number, since it is larger than the sum of its proper divisors (1).

16312003 is an equidigital number, since it uses as much as digits as its factorization.

16312003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 16312003 is about 4038.8120778268. The cubic root of 16312003 is about 253.6115904155.

Adding to 16312003 its reverse (30021361), we get a palindrome (46333364).

The spelling of 16312003 in words is "sixteen million, three hundred twelve thousand, three".