13311995 has 4 divisors (see below), whose sum is σ = 15974400. Its totient is φ = 10649592.

The previous prime is 13311973. The next prime is 13312001. The reversal of 13311995 is 59911331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 59911331 = 331 ⋅181001.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13311995 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1331195 + ... + 1331204.

It is an arithmetic number, because the mean of its divisors is an integer number (3993600).

Almost surely, 2^13311995 is an apocalyptic number.

13311995 is a deficient number, since it is larger than the sum of its proper divisors (2662405).

13311995 is an equidigital number, since it uses as much as digits as its factorization.

13311995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2662404.

The product of its digits is 3645, while the sum is 32.

The square root of 13311995 is about 3648.5606751156. The cubic root of 13311995 is about 236.9996558001. Note that the first 3 decimals are identical.

The spelling of 13311995 in words is "thirteen million, three hundred eleven thousand, nine hundred ninety-five".