2131201040 has 20 divisors (see below), whose sum is σ = 4955042604. Its totient is φ = 852480384.

The previous prime is 2131200997. The next prime is 2131201081. The reversal of 2131201040 is 401021312.

It can be written as a sum of positive squares in 2 ways, for example, as 259081216 + 1872119824 = 16096^2 + 43268^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13319927 + ... + 13320086.

Almost surely, 2^2131201040 is an apocalyptic number.

2131201040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2131201040 is an abundant number, since it is smaller than the sum of its proper divisors (2823841564).

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

2131201040 is a wasteful number, since it uses less digits than its factorization.

2131201040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26640026 (or 26640020 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2131201040 is about 46164.9330119735. The cubic root of 2131201040 is about 1286.8901392949.

Adding to 2131201040 its reverse (401021312), we get a palindrome (2532222352).

The spelling of 2131201040 in words is "two billion, one hundred thirty-one million, two hundred one thousand, forty".