16311963 has 8 divisors (see below), whose sum is σ = 21782800. Its totient is φ = 10857888.

The previous prime is 16311943. The next prime is 16312001. The reversal of 16311963 is 36911361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16311963 - 2⁸ = 16311707 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16311963.

It is not an unprimeable number, because it can be changed into a prime (16311913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1708 + ... + 5961.

It is an arithmetic number, because the mean of its divisors is an integer number (2722850).

Almost surely, 2^16311963 is an apocalyptic number.

16311963 is a deficient number, since it is larger than the sum of its proper divisors (5470837).

16311963 is an equidigital number, since it uses as much as digits as its factorization.

16311963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8381.

The product of its digits is 2916, while the sum is 30.

The square root of 16311963 is about 4038.8071258727. The cubic root of 16311963 is about 253.6113831148.

The spelling of 16311963 in words is "sixteen million, three hundred eleven thousand, nine hundred sixty-three".