2131100072 has 16 divisors (see below), whose sum is σ = 4016736000. Its totient is φ = 1059970480.

The previous prime is 2131100071. The next prime is 2131100089. The reversal of 2131100072 is 2700011312.

It is a self number, because there is not a number n which added to its sum of digits gives 2131100072.

It is not an unprimeable number, because it can be changed into a prime (2131100071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 695822 + ... + 698877.

It is an arithmetic number, because the mean of its divisors is an integer number (251046000).

Almost surely, 2^2131100072 is an apocalyptic number.

It is an amenable number.

2131100072 is a deficient number, since it is larger than the sum of its proper divisors (1885635928).

2131100072 is a wasteful number, since it uses less digits than its factorization.

2131100072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1394896 (or 1394892 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 2131100072 is about 46163.8394417102. The cubic root of 2131100072 is about 1286.8698163607.

Adding to 2131100072 its reverse (2700011312), we get a palindrome (4831111384).

The spelling of 2131100072 in words is "two billion, one hundred thirty-one million, one hundred thousand, seventy-two".