11199931 has 2 divisors, whose sum is σ = 11199932. Its totient is φ = 11199930.

The previous prime is 11199901. The next prime is 11199943. The reversal of 11199931 is 13999111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11199931 - 2⁵ = 11199899 is a prime.

It is a super-2 number, since 2×11199931² = 250876908809522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11199901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5599965 + 5599966.

It is an arithmetic number, because the mean of its divisors is an integer number (5599966).

Almost surely, 2^11199931 is an apocalyptic number.

11199931 is a deficient number, since it is larger than the sum of its proper divisors (1).

11199931 is an equidigital number, since it uses as much as digits as its factorization.

11199931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2187, while the sum is 34.

The square root of 11199931 is about 3346.6297972737. The cubic root of 11199931 is about 223.7373289538.

The spelling of 11199931 in words is "eleven million, one hundred ninety-nine thousand, nine hundred thirty-one".