2261310643 has 4 divisors (see below), whose sum is σ = 2261406640. Its totient is φ = 2261214648.

The previous prime is 2261310637. The next prime is 2261310647. The reversal of 2261310643 is 3460131622.

2261310643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2261310643 - 2²¹ = 2259213491 is a prime.

It is a super-2 number, since 2×2261310643² = 10227051648290146898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2261310647) 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, 14221 + ... + 68737.

It is an arithmetic number, because the mean of its divisors is an integer number (565351660).

Almost surely, 2^2261310643 is an apocalyptic number.

2261310643 is a deficient number, since it is larger than the sum of its proper divisors (95997).

2261310643 is an equidigital number, since it uses as much as digits as its factorization.

2261310643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95996.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 2261310643 is about 47553.2400893987. The cubic root of 2261310643 is about 1312.5627518055.

The spelling of 2261310643 in words is "two billion, two hundred sixty-one million, three hundred ten thousand, six hundred forty-three".