1085231111 has 8 divisors (see below), whose sum is σ = 1095450624. Its totient is φ = 1075051800.

The previous prime is 1085231101. The next prime is 1085231131. The reversal of 1085231111 is 1111325801.

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 1085231111 - 2⁶ = 1085231047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1085231101) 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, 45626 + ... + 65208.

It is an arithmetic number, because the mean of its divisors is an integer number (136931328).

Almost surely, 2^1085231111 is an apocalyptic number.

1085231111 is a deficient number, since it is larger than the sum of its proper divisors (10219513).

1085231111 is a wasteful number, since it uses less digits than its factorization.

1085231111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20101.

The product of its (nonzero) digits is 240, while the sum is 23.

The square root of 1085231111 is about 32942.8461278014. The cubic root of 1085231111 is about 1027.6393958835.

Adding to 1085231111 its reverse (1111325801), we get a palindrome (2196556912).

The spelling of 1085231111 in words is "one billion, eighty-five million, two hundred thirty-one thousand, one hundred eleven".