2231597 has 4 divisors (see below), whose sum is σ = 2303616. Its totient is φ = 2159580.

The previous prime is 2231591. The next prime is 2231599. The reversal of 2231597 is 7951322.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7951322 = 2 ⋅3975661.

It is a cyclic number.

It is not a de Polignac number, because 2231597 - 2⁶ = 2231533 is a prime.

It is a super-3 number, since 3×2231597³ = 33340227690627639519, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35963 + ... + 36024.

It is an arithmetic number, because the mean of its divisors is an integer number (575904).

2^2231597 is an apocalyptic number.

It is an amenable number.

2231597 is a deficient number, since it is larger than the sum of its proper divisors (72019).

2231597 is an equidigital number, since it uses as much as digits as its factorization.

2231597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72018.

The product of its digits is 3780, while the sum is 29.

The square root of 2231597 is about 1493.8530717577. The cubic root of 2231597 is about 130.6788356650.

The spelling of 2231597 in words is "two million, two hundred thirty-one thousand, five hundred ninety-seven".