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234188031 = 37113832647
BaseRepresentation
bin11011111010101…
…10110011111111
3121022122222120210
431331112303333
5434423004111
635123243503
75542364640
oct1575266377
9538588523
10234188031
11110213a30
1266519593
13396975cc
14231616c7
151585e0a6
hexdf56cff

234188031 has 32 divisors (see below), whose sum is σ = 390463488. Its totient is φ = 121292640.

The previous prime is 234187999. The next prime is 234188057. The reversal of 234188031 is 130881432.

It is not a de Polignac number, because 234188031 - 25 = 234187999 is a prime.

It is a super-2 number, since 2×2341880312 = 109688067727313922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 234188031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234188081) 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, 87150 + ... + 89796.

It is an arithmetic number, because the mean of its divisors is an integer number (12201984).

Almost surely, 2234188031 is an apocalyptic number.

234188031 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

234188031 is a deficient number, since it is larger than the sum of its proper divisors (156275457).

234188031 is a wasteful number, since it uses less digits than its factorization.

234188031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3051.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 234188031 is about 15303.2032921216. The cubic root of 234188031 is about 616.3890264500.

The spelling of 234188031 in words is "two hundred thirty-four million, one hundred eighty-eight thousand, thirty-one".

Divisors: 1 3 7 11 21 33 77 231 383 1149 2647 2681 4213 7941 8043 12639 18529 29117 29491 55587 87351 88473 203819 611457 1013801 3041403 7096607 11151811 21289821 33455433 78062677 234188031