2231290 has 8 divisors (see below), whose sum is σ = 4016340. Its totient is φ = 892512.

The previous prime is 2231279. The next prime is 2231293. The reversal of 2231290 is 921322.

It is a happy number.

2231290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1879641 + 351649 = 1371^2 + 593^2 .

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

It is a super-3 number, since 3×2231290³ = 33326469773927067000, which contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2231293) 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 3 ways as a sum of consecutive naturals, for example, 111555 + ... + 111574.

2^2231290 is an apocalyptic number.

2231290 is a deficient number, since it is larger than the sum of its proper divisors (1785050).

2231290 is a wasteful number, since it uses less digits than its factorization.

2231290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223136.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 2231290 is about 1493.7503138075. The cubic root of 2231290 is about 130.6728429100.

The spelling of 2231290 in words is "two million, two hundred thirty-one thousand, two hundred ninety".