11231997 has 8 divisors (see below), whose sum is σ = 17115456. Its totient is φ = 6418272.

The previous prime is 11231993. The next prime is 11232017. The reversal of 11231997 is 79913211.

11231997 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 11231997 - 2² = 11231993 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11231993) 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, 267408 + ... + 267449.

It is an arithmetic number, because the mean of its divisors is an integer number (2139432).

Almost surely, 2^11231997 is an apocalyptic number.

It is an amenable number.

11231997 is a deficient number, since it is larger than the sum of its proper divisors (5883459).

11231997 is an equidigital number, since it uses as much as digits as its factorization.

11231997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534867.

The product of its digits is 3402, while the sum is 33.

The square root of 11231997 is about 3351.4171629327. The cubic root of 11231997 is about 223.9506494704.

The spelling of 11231997 in words is "eleven million, two hundred thirty-one thousand, nine hundred ninety-seven".