13214018 has 4 divisors (see below), whose sum is σ = 19821030. Its totient is φ = 6607008.

The previous prime is 13214017. The next prime is 13214021. The reversal of 13214018 is 81041231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81041231 = 5153 ⋅15727.

It can be written as a sum of positive squares in only one way, i.e., 8958049 + 4255969 = 2993^2 + 2063^2 .

It is a super-2 number, since 2×13214018² = 349220543408648, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13214011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3303503 + ... + 3303506.

Almost surely, 2^13214018 is an apocalyptic number.

13214018 is a deficient number, since it is larger than the sum of its proper divisors (6607012).

13214018 is an equidigital number, since it uses as much as digits as its factorization.

13214018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6607011.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 13214018 is about 3635.1090767678. The cubic root of 13214018 is about 236.4167800443.

Adding to 13214018 its reverse (81041231), we get a palindrome (94255249).

The spelling of 13214018 in words is "thirteen million, two hundred fourteen thousand, eighteen".