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1117231 = 1139887
BaseRepresentation
bin100010000110000101111
32002202112221
410100300233
5241222411
635540211
712332143
oct4206057
92082487
101117231
116a3435
1245a667
133016ab
14211223
15171071
hex110c2f

1117231 has 4 divisors (see below), whose sum is σ = 1127232. Its totient is φ = 1107232.

The previous prime is 1117199. The next prime is 1117243. The reversal of 1117231 is 1327111.

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 1117231 - 25 = 1117199 is a prime.

It is a super-2 number, since 2×11172312 = 2496410214722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1117031) 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, 4831 + ... + 5056.

It is an arithmetic number, because the mean of its divisors is an integer number (281808).

21117231 is an apocalyptic number.

1117231 is the 669-th centered pentagonal number.

1117231 is a deficient number, since it is larger than the sum of its proper divisors (10001).

1117231 is an equidigital number, since it uses as much as digits as its factorization.

1117231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10000.

The product of its digits is 42, while the sum is 16.

The square root of 1117231 is about 1056.9914853016. The cubic root of 1117231 is about 103.7642279805.

The spelling of 1117231 in words is "one million, one hundred seventeen thousand, two hundred thirty-one".

Divisors: 1 113 9887 1117231