2131630616 has 32 divisors (see below), whose sum is σ = 4314405600. Its totient is φ = 984318720.

The previous prime is 2131630591. The next prime is 2131630619. The reversal of 2131630616 is 6160361312.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131630619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194405 + ... + 205076.

It is an arithmetic number, because the mean of its divisors is an integer number (134825175).

Almost surely, 2^2131630616 is an apocalyptic number.

It is an amenable number.

2131630616 is an abundant number, since it is smaller than the sum of its proper divisors (2182774984).

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

2131630616 is a wasteful number, since it uses less digits than its factorization.

2131630616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399539 (or 399535 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 2131630616 is about 46169.5853999145. The cubic root of 2131630616 is about 1286.9765975829.

Adding to 2131630616 its reverse (6160361312), we get a palindrome (8291991928).

The spelling of 2131630616 in words is "two billion, one hundred thirty-one million, six hundred thirty thousand, six hundred sixteen".