1131207 has 32 divisors (see below), whose sum is σ = 1935360. Its totient is φ = 570720.
The previous prime is 1131191. The next prime is 1131217. The reversal of 1131207 is 7021311.
It is not a de Polignac number, because 1131207 - 24 = 1131191 is a prime.
1131207 is a lucky number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1131217) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13588 + ... + 13670.
It is an arithmetic number, because the mean of its divisors is an integer number (60480).
21131207 is an apocalyptic number.
1131207 is a deficient number, since it is larger than the sum of its proper divisors (804153).
1131207 is a wasteful number, since it uses less digits than its factorization.
1131207 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 163.
The product of its (nonzero) digits is 42, while the sum is 15.
The square root of 1131207 is about 1063.5821547958. The cubic root of 1131207 is about 104.1951157140.
Adding to 1131207 its reverse (7021311), we get a palindrome (8152518).
The spelling of 1131207 in words is "one million, one hundred thirty-one thousand, two hundred seven".
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