2258731 has 8 divisors (see below), whose sum is σ = 2343600. Its totient is φ = 2175360.

The previous prime is 2258717. The next prime is 2258741. The reversal of 2258731 is 1378522.

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 2258731 - 2¹⁷ = 2127659 is a prime.

It is a super-2 number, since 2×2258731² = 10203731460722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2258731.

It is not an unprimeable number, because it can be changed into a prime (2258741) 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, 3340 + ... + 3958.

It is an arithmetic number, because the mean of its divisors is an integer number (292950).

2^2258731 is an apocalyptic number.

2258731 is a deficient number, since it is larger than the sum of its proper divisors (84869).

2258731 is an equidigital number, since it uses as much as digits as its factorization.

2258731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749.

The product of its digits is 3360, while the sum is 28.

The square root of 2258731 is about 1502.9075154513. The cubic root of 2258731 is about 131.2063449675.

The spelling of 2258731 in words is "two million, two hundred fifty-eight thousand, seven hundred thirty-one".