11315999 has 8 divisors (see below), whose sum is σ = 12095568. Its totient is φ = 10549120.

The previous prime is 11315989. The next prime is 11316007. The reversal of 11315999 is 99951311.

11315999 = 115² + 116² + ... + 328².

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11315999 - 2¹² = 11311903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11315929) 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, 1292 + ... + 4929.

It is an arithmetic number, because the mean of its divisors is an integer number (1511946).

Almost surely, 2^11315999 is an apocalyptic number.

11315999 is a deficient number, since it is larger than the sum of its proper divisors (779569).

11315999 is a wasteful number, since it uses less digits than its factorization.

11315999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6345.

The product of its digits is 10935, while the sum is 38.

The square root of 11315999 is about 3363.9261287965. The cubic root of 11315999 is about 224.5075584051.

The spelling of 11315999 in words is "eleven million, three hundred fifteen thousand, nine hundred ninety-nine".