16313813 has 4 divisors (see below), whose sum is σ = 16693248. Its totient is φ = 15934380.

The previous prime is 16313749. The next prime is 16313827. The reversal of 16313813 is 31831361.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 16313813 - 2⁶ = 16313749 is a prime.

It is a super-2 number, since 2×16313813² = 532280989197938, 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 (16313893) 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, 189653 + ... + 189738.

It is an arithmetic number, because the mean of its divisors is an integer number (4173312).

Almost surely, 2^16313813 is an apocalyptic number.

It is an amenable number.

16313813 is a deficient number, since it is larger than the sum of its proper divisors (379435).

16313813 is an equidigital number, since it uses as much as digits as its factorization.

16313813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379434.

The product of its digits is 1296, while the sum is 26.

The square root of 16313813 is about 4039.0361473995. The cubic root of 16313813 is about 253.6209704204.

The spelling of 16313813 in words is "sixteen million, three hundred thirteen thousand, eight hundred thirteen".