2261217923 has 8 divisors (see below), whose sum is σ = 2395744128. Its totient is φ = 2126859904.

The previous prime is 2261217901. The next prime is 2261217941. The reversal of 2261217923 is 3297121622.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2261217923 - 2⁶ = 2261217859 is a prime.

It is a super-2 number, since 2×2261217923² = 10226212990592867858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2261217953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13811 + ... + 68652.

It is an arithmetic number, because the mean of its divisors is an integer number (299468016).

Almost surely, 2^2261217923 is an apocalyptic number.

2261217923 is a deficient number, since it is larger than the sum of its proper divisors (134526205).

2261217923 is a wasteful number, since it uses less digits than its factorization.

2261217923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84093.

The product of its digits is 18144, while the sum is 35.

The square root of 2261217923 is about 47552.2651721240. The cubic root of 2261217923 is about 1312.5448119908.

The spelling of 2261217923 in words is "two billion, two hundred sixty-one million, two hundred seventeen thousand, nine hundred twenty-three".