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11910231 = 323142689
BaseRepresentation
bin101101011011…
…110001010111
3211102002202200
4231123301113
511022111411
61103135543
7203143464
oct55336127
924362680
1011910231
1167a5373
123ba45b3
132610198
14182066b
1510a3e56
hexb5bc57

11910231 has 12 divisors (see below), whose sum is σ = 17759040. Its totient is φ = 7683840.

The previous prime is 11910229. The next prime is 11910233. The reversal of 11910231 is 13201911.

It is an interprime number because it is at equal distance from previous prime (11910229) and next prime (11910233).

It is not a de Polignac number, because 11910231 - 21 = 11910229 is a prime.

It is a super-2 number, since 2×119102312 = 283707204946722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11910233) 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, 21066 + ... + 21623.

It is an arithmetic number, because the mean of its divisors is an integer number (1479920).

Almost surely, 211910231 is an apocalyptic number.

11910231 is a deficient number, since it is larger than the sum of its proper divisors (5848809).

11910231 is a wasteful number, since it uses less digits than its factorization.

11910231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42726 (or 42723 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

The square root of 11910231 is about 3451.1202529034. The cubic root of 11910231 is about 228.3705309364.

The spelling of 11910231 in words is "eleven million, nine hundred ten thousand, two hundred thirty-one".

Divisors: 1 3 9 31 93 279 42689 128067 384201 1323359 3970077 11910231