2531330 has 8 divisors (see below), whose sum is σ = 4556412. Its totient is φ = 1012528.

The previous prime is 2531293. The next prime is 2531369. The reversal of 2531330 is 331352.

It can be written as a sum of positive squares in 2 ways, for example, as 2531281 + 49 = 1591^2 + 7^2 .

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2531299 and 2531308.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126557 + ... + 126576.

2^2531330 is an apocalyptic number.

2531330 is a deficient number, since it is larger than the sum of its proper divisors (2025082).

2531330 is a wasteful number, since it uses less digits than its factorization.

2531330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253140.

The product of its (nonzero) digits is 270, while the sum is 17.

The square root of 2531330 is about 1591.0153990455. The cubic root of 2531330 is about 136.2854801969.

Adding to 2531330 its reverse (331352), we get a palindrome (2862682).

The spelling of 2531330 in words is "two million, five hundred thirty-one thousand, three hundred thirty".