1231116 has 12 divisors (see below), whose sum is σ = 2872632. Its totient is φ = 410368.

The previous prime is 1231099. The next prime is 1231127. The reversal of 1231116 is 6111321.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1231095 and 1231104.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51285 + ... + 51308.

It is an arithmetic number, because the mean of its divisors is an integer number (239386).

2^1231116 is an apocalyptic number.

It is an amenable number.

1231116 is an abundant number, since it is smaller than the sum of its proper divisors (1641516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231116 is a wasteful number, since it uses less digits than its factorization.

1231116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102600 (or 102598 counting only the distinct ones).

The product of its digits is 36, while the sum is 15.

The square root of 1231116 is about 1109.5566682238. The cubic root of 1231116 is about 107.1765217388.

Adding to 1231116 its reverse (6111321), we get a palindrome (7342437).

The spelling of 1231116 in words is "one million, two hundred thirty-one thousand, one hundred sixteen".