1105231131 has 12 divisors (see below), whose sum is σ = 1597805352. Its totient is φ = 736192896.

The previous prime is 1105231091. The next prime is 1105231133. The reversal of 1105231131 is 1311325011.

1105231131 is a `hidden beast` number, since 1 + 10 + 523 + 1 + 131 = 666.

It is not a de Polignac number, because 1105231131 - 2⁶ = 1105231067 is a prime.

It is a super-2 number, since 2×1105231131² = 2443071705863078322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1105231133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41046 + ... + 62411.

It is an arithmetic number, because the mean of its divisors is an integer number (133150446).

Almost surely, 2^1105231131 is an apocalyptic number.

1105231131 is a deficient number, since it is larger than the sum of its proper divisors (492574221).

1105231131 is a wasteful number, since it uses less digits than its factorization.

1105231131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104650 (or 104647 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 1105231131 is about 33245.0166340762. The cubic root of 1105231131 is about 1033.9138897097.

Adding to 1105231131 its reverse (1311325011), we get a palindrome (2416556142).

The spelling of 1105231131 in words is "one billion, one hundred five million, two hundred thirty-one thousand, one hundred thirty-one".