16311242 has 4 divisors (see below), whose sum is σ = 24466866. Its totient is φ = 8155620.

The previous prime is 16311241. The next prime is 16311263. The reversal of 16311242 is 24211361.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 15928081 + 383161 = 3991^2 + 619^2 .

It is not an unprimeable number, because it can be changed into a prime (16311241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4077809 + ... + 4077812.

Almost surely, 2^16311242 is an apocalyptic number.

16311242 is a deficient number, since it is larger than the sum of its proper divisors (8155624).

16311242 is an equidigital number, since it uses as much as digits as its factorization.

16311242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8155623.

The product of its digits is 288, while the sum is 20.

The square root of 16311242 is about 4038.7178658579. The cubic root of 16311242 is about 253.6076464605.

The spelling of 16311242 in words is "sixteen million, three hundred eleven thousand, two hundred forty-two".