2236131901 has 4 divisors (see below), whose sum is σ = 2269507072. Its totient is φ = 2202756732.

The previous prime is 2236131899. The next prime is 2236131917. The reversal of 2236131901 is 1091316322.

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 2236131901 - 2¹ = 2236131899 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2236131901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2236131991) 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, 16687485 + ... + 16687618.

It is an arithmetic number, because the mean of its divisors is an integer number (567376768).

Almost surely, 2^2236131901 is an apocalyptic number.

It is an amenable number.

2236131901 is a deficient number, since it is larger than the sum of its proper divisors (33375171).

2236131901 is an equidigital number, since it uses as much as digits as its factorization.

2236131901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33375170.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 2236131901 is about 47287.7563540500. The cubic root of 2236131901 is about 1307.6729467897.

The spelling of 2236131901 in words is "two billion, two hundred thirty-six million, one hundred thirty-one thousand, nine hundred one".