2531630 has 16 divisors (see below), whose sum is σ = 4575744. Its totient is φ = 1008480.

The previous prime is 2531629. The next prime is 2531653. The reversal of 2531630 is 361352.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3500 + ... + 4160.

It is an arithmetic number, because the mean of its divisors is an integer number (285984).

2^2531630 is an apocalyptic number.

2531630 is a deficient number, since it is larger than the sum of its proper divisors (2044114).

2531630 is a wasteful number, since it uses less digits than its factorization.

2531630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 2531630 is about 1591.1096756666. The cubic root of 2531630 is about 136.2908639318.

Adding to 2531630 its reverse (361352), we get a palindrome (2892982).

The spelling of 2531630 in words is "two million, five hundred thirty-one thousand, six hundred thirty".