16313311 has 4 divisors (see below), whose sum is σ = 18643792. Its totient is φ = 13982832.

The previous prime is 16313309. The next prime is 16313333. The reversal of 16313311 is 11331361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11331361 = 37 ⋅306253.

It is a cyclic number.

It is not a de Polignac number, because 16313311 - 2¹ = 16313309 is a prime.

It is a super-2 number, since 2×16313311² = 532248231565442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16313111) 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, 1165230 + ... + 1165243.

It is an arithmetic number, because the mean of its divisors is an integer number (4660948).

Almost surely, 2^16313311 is an apocalyptic number.

16313311 is a deficient number, since it is larger than the sum of its proper divisors (2330481).

16313311 is an equidigital number, since it uses as much as digits as its factorization.

16313311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2330480.

The product of its digits is 162, while the sum is 19.

The square root of 16313311 is about 4038.9740033825. The cubic root of 16313311 is about 253.6183689637.

Adding to 16313311 its reverse (11331361), we get a palindrome (27644672).

The spelling of 16313311 in words is "sixteen million, three hundred thirteen thousand, three hundred eleven".