16313138 has 16 divisors (see below), whose sum is σ = 25510680. Its totient is φ = 7814016.

The previous prime is 16313131. The next prime is 16313147. The reversal of 16313138 is 83131361.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14615329 + 1697809 = 3823^2 + 1303^2 .

It is a super-2 number, since 2×16313138² = 532236942814088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16313131) 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, 6920 + ... + 8972.

Almost surely, 2^16313138 is an apocalyptic number.

16313138 is a deficient number, since it is larger than the sum of its proper divisors (9197542).

16313138 is a wasteful number, since it uses less digits than its factorization.

16313138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2221.

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

The square root of 16313138 is about 4038.9525869958. The cubic root of 16313138 is about 253.6174724334.

Adding to 16313138 its reverse (83131361), we get a palindrome (99444499).

The spelling of 16313138 in words is "sixteen million, three hundred thirteen thousand, one hundred thirty-eight".