2102631630 has 128 divisors (see below), whose sum is σ = 5715173376. Its totient is φ = 490627200.

The previous prime is 2102631617. The next prime is 2102631647. The reversal of 2102631630 is 361362012.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2102631630.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1006447 + ... + 1008533.

It is an arithmetic number, because the mean of its divisors is an integer number (44649792).

Almost surely, 2^2102631630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2102631630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2857586688).

2102631630 is an abundant number, since it is smaller than the sum of its proper divisors (3612541746).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2102631630 is a wasteful number, since it uses less digits than its factorization.

2102631630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2222.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 2102631630 is about 45854.4613969023. The cubic root of 2102631630 is about 1281.1138640049.

Adding to 2102631630 its reverse (361362012), we get a palindrome (2463993642).

The spelling of 2102631630 in words is "two billion, one hundred two million, six hundred thirty-one thousand, six hundred thirty".