2231851049 has 4 divisors (see below), whose sum is σ = 2308811460. Its totient is φ = 2154890640.

The previous prime is 2231851019. The next prime is 2231851057. The reversal of 2231851049 is 9401581322.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1432092649 + 799758400 = 37843^2 + 28280^2 .

It is a cyclic number.

It is not a de Polignac number, because 2231851049 - 2²⁰ = 2230802473 is a prime.

It is a super-3 number, since 3×2231851049³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2231851019) 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, 38480162 + ... + 38480219.

It is an arithmetic number, because the mean of its divisors is an integer number (577202865).

Almost surely, 2^2231851049 is an apocalyptic number.

2231851049 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2231851049 is a deficient number, since it is larger than the sum of its proper divisors (76960411).

2231851049 is an equidigital number, since it uses as much as digits as its factorization.

2231851049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76960410.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 2231851049 is about 47242.4708181103. The cubic root of 2231851049 is about 1306.8379438107.

The spelling of 2231851049 in words is "two billion, two hundred thirty-one million, eight hundred fifty-one thousand, forty-nine".