2261240911 has 4 divisors (see below), whose sum is σ = 2278502424. Its totient is φ = 2243979400.

The previous prime is 2261240909. The next prime is 2261240959. The reversal of 2261240911 is 1190421622.

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

It is a cyclic number.

It is not a de Polignac number, because 2261240911 - 2¹ = 2261240909 is a prime.

It is a super-2 number, since 2×2261240911² = 10226420915160219842, which contains 22 as substring.

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 2261240911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2261240411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8630560 + ... + 8630821.

It is an arithmetic number, because the mean of its divisors is an integer number (569625606).

Almost surely, 2^2261240911 is an apocalyptic number.

2261240911 is a deficient number, since it is larger than the sum of its proper divisors (17261513).

2261240911 is a wasteful number, since it uses less digits than its factorization.

2261240911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17261512.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 2261240911 is about 47552.5068844956. The cubic root of 2261240911 is about 1312.5492598413.

The spelling of 2261240911 in words is "two billion, two hundred sixty-one million, two hundred forty thousand, nine hundred eleven".