2239531 has 8 divisors (see below), whose sum is σ = 2568704. Its totient is φ = 1912680.

The previous prime is 2239519. The next prime is 2239537. The reversal of 2239531 is 1359322.

It is a happy number.

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

It is not a de Polignac number, because 2239531 - 2¹⁹ = 1715243 is a prime.

It is a super-2 number, since 2×2239531² = 10030998199922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2239496 and 2239505.

It is not an unprimeable number, because it can be changed into a prime (2239537) 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, 2896 + ... + 3586.

It is an arithmetic number, because the mean of its divisors is an integer number (321088).

2^2239531 is an apocalyptic number.

2239531 is a deficient number, since it is larger than the sum of its proper divisors (329173).

2239531 is an equidigital number, since it uses as much as digits as its factorization.

2239531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161.

The product of its digits is 1620, while the sum is 25.

The square root of 2239531 is about 1496.5062646043. The cubic root of 2239531 is about 130.8335200434.

The spelling of 2239531 in words is "two million, two hundred thirty-nine thousand, five hundred thirty-one".