16311434 has 4 divisors (see below), whose sum is σ = 24467154. Its totient is φ = 8155716.

The previous prime is 16311419. The next prime is 16311467. The reversal of 16311434 is 43411361.

16311434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 11458225 + 4853209 = 3385^2 + 2203^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4077857 + ... + 4077860.

Almost surely, 2^16311434 is an apocalyptic number.

16311434 is a deficient number, since it is larger than the sum of its proper divisors (8155720).

16311434 is an equidigital number, since it uses as much as digits as its factorization.

16311434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8155719.

The product of its digits is 864, while the sum is 23.

The square root of 16311434 is about 4038.7416357078. The cubic root of 16311434 is about 253.6086415303.

Adding to 16311434 its reverse (43411361), we get a palindrome (59722795).

The spelling of 16311434 in words is "sixteen million, three hundred eleven thousand, four hundred thirty-four".