2531616630 has 32 divisors (see below), whose sum is σ = 6081467904. Its totient is φ = 674476896.

The previous prime is 2531616617. The next prime is 2531616649. The reversal of 2531616630 is 366161352.

It is a super-2 number, since 2×2531616630² = 12818165522585113800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2531616591 and 2531616600.

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 15 ways as a sum of consecutive naturals, for example, 5164 + ... + 71343.

It is an arithmetic number, because the mean of its divisors is an integer number (190045872).

Almost surely, 2^2531616630 is an apocalyptic number.

2531616630 is an abundant number, since it is smaller than the sum of its proper divisors (3549851274).

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

2531616630 is a wasteful number, since it uses less digits than its factorization.

2531616630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77620.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 2531616630 is about 50315.1729600525. The cubic root of 2531616630 is about 1362.9062400572.

Adding to 2531616630 its reverse (366161352), we get a palindrome (2897777982).

The spelling of 2531616630 in words is "two billion, five hundred thirty-one million, six hundred sixteen thousand, six hundred thirty".