1231097 has 8 divisors (see below), whose sum is σ = 1413696. Its totient is φ = 1050192.

The previous prime is 1231093. The next prime is 1231099. The reversal of 1231097 is 7901321.

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 1231097 - 2² = 1231093 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2558 + ... + 3000.

It is an arithmetic number, because the mean of its divisors is an integer number (176712).

2^1231097 is an apocalyptic number.

It is an amenable number.

1231097 is a deficient number, since it is larger than the sum of its proper divisors (182599).

1231097 is an equidigital number, since it uses as much as digits as its factorization.

1231097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 1231097 is about 1109.5481062126. The cubic root of 1231097 is about 107.1759703788.

The spelling of 1231097 in words is "one million, two hundred thirty-one thousand, ninety-seven".