2232731161 has 4 divisors (see below), whose sum is σ = 2233534500. Its totient is φ = 2231927824.

The previous prime is 2232731153. The next prime is 2232731191. The reversal of 2232731161 is 1611372322.

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 548449561 + 1684281600 = 23419^2 + 41040^2 .

It is a cyclic number.

It is not a de Polignac number, because 2232731161 - 2³ = 2232731153 is a prime.

It is a super-3 number, since 3×2232731161³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2232731191) 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, 397486 + ... + 403063.

It is an arithmetic number, because the mean of its divisors is an integer number (558383625).

Almost surely, 2^2232731161 is an apocalyptic number.

It is an amenable number.

2232731161 is a deficient number, since it is larger than the sum of its proper divisors (803339).

2232731161 is an equidigital number, since it uses as much as digits as its factorization.

2232731161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803338.

The product of its digits is 3024, while the sum is 28.

The square root of 2232731161 is about 47251.7847387800. The cubic root of 2232731161 is about 1307.0097014801.

The spelling of 2232731161 in words is "two billion, two hundred thirty-two million, seven hundred thirty-one thousand, one hundred sixty-one".