461111111 has 4 divisors (see below), whose sum is σ = 488235312. Its totient is φ = 433986912.

The previous prime is 461111087. The next prime is 461111117. The reversal of 461111111 is 111111164.

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 461111111 - 2¹⁴ = 461094727 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 27124183 = 461111111 / (4 + 6 + 1 + 1 + 1 + 1 + 1 + 1 + 1).

It is a Duffinian number.

461111111 is a modest number, since divided by 11111 gives 4611 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 461111111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (461111117) 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, 13562075 + ... + 13562108.

It is an arithmetic number, because the mean of its divisors is an integer number (122058828).

Almost surely, 2^461111111 is an apocalyptic number.

461111111 is a deficient number, since it is larger than the sum of its proper divisors (27124201).

461111111 is a wasteful number, since it uses less digits than its factorization.

461111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27124200.

The product of its digits is 24, while the sum is 17.

The square root of 461111111 is about 21473.4978752880. The cubic root of 461111111 is about 772.5652963382.

Adding to 461111111 its reverse (111111164), we get a palindrome (572222275).

The spelling of 461111111 in words is "four hundred sixty-one million, one hundred eleven thousand, one hundred eleven".