11320997 has 12 divisors (see below), whose sum is σ = 12319296. Its totient is φ = 10395840.

The previous prime is 11320973. The next prime is 11321003. The reversal of 11320997 is 79902311.

It is a happy number.

It is not a de Polignac number, because 11320997 - 2¹⁴ = 11304613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11320957) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11972 + ... + 12882.

It is an arithmetic number, because the mean of its divisors is an integer number (1026608).

Almost surely, 2^11320997 is an apocalyptic number.

11320997 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

11320997 is a deficient number, since it is larger than the sum of its proper divisors (998299).

11320997 is an equidigital number, since it uses as much as digits as its factorization.

11320997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988 (or 971 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 11320997 is about 3364.6689287358. The cubic root of 11320997 is about 224.5406067060.

The spelling of 11320997 in words is "eleven million, three hundred twenty thousand, nine hundred ninety-seven".