2331290 has 32 divisors (see below), whose sum is σ = 4596480. Its totient is φ = 846144.

The previous prime is 2331283. The next prime is 2331299. The reversal of 2331290 is 921332.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2331299) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10157 + ... + 10383.

It is an arithmetic number, because the mean of its divisors is an integer number (143640).

2^2331290 is an apocalyptic number.

2331290 is a deficient number, since it is larger than the sum of its proper divisors (2265190).

2331290 is a wasteful number, since it uses less digits than its factorization.

2331290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 2331290 is about 1526.8562473265. The cubic root of 2331290 is about 132.5965120978.

It can be divided in two parts, 23 and 31290, that added together give a palindrome (31313).

The spelling of 2331290 in words is "two million, three hundred thirty-one thousand, two hundred ninety".