2131601201 has 4 divisors (see below), whose sum is σ = 2133921600. Its totient is φ = 2129280804.

The previous prime is 2131601189. The next prime is 2131601209. The reversal of 2131601201 is 1021061312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2131601201 - 2¹⁴ = 2131584817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2131601201.

It is not an unprimeable number, because it can be changed into a prime (2131601209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1158821 + ... + 1160658.

It is an arithmetic number, because the mean of its divisors is an integer number (533480400).

Almost surely, 2^2131601201 is an apocalyptic number.

It is an amenable number.

2131601201 is a deficient number, since it is larger than the sum of its proper divisors (2320399).

2131601201 is an equidigital number, since it uses as much as digits as its factorization.

2131601201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2320398.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 2131601201 is about 46169.2668449478. The cubic root of 2131601201 is about 1286.9706777657.

Adding to 2131601201 its reverse (1021061312), we get a palindrome (3152662513).

The spelling of 2131601201 in words is "two billion, one hundred thirty-one million, six hundred one thousand, two hundred one".