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230111132 = 22157366419
BaseRepresentation
bin11011011011100…
…11011110011100
3121000222212010112
431231303132130
5432402024012
634500025152
75462624636
oct1555633634
9530885115
10230111132
11108989999
12650921b8
133889aa44
14227bda56
1515306122
hexdb7379c

230111132 has 12 divisors (see below), whose sum is σ = 405260520. Its totient is φ = 114322416.

The previous prime is 230111131. The next prime is 230111149. The reversal of 230111132 is 231111032.

It is a super-2 number, since 2×2301111322 = 105902266140642848, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230111131) 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, 182582 + ... + 183837.

It is an arithmetic number, because the mean of its divisors is an integer number (33771710).

Almost surely, 2230111132 is an apocalyptic number.

It is an amenable number.

230111132 is a deficient number, since it is larger than the sum of its proper divisors (175149388).

230111132 is a wasteful number, since it uses less digits than its factorization.

230111132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366580 (or 366578 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 230111132 is about 15169.4143591636. The cubic root of 230111132 is about 612.7912324312.

Adding to 230111132 its reverse (231111032), we get a palindrome (461222164).

The spelling of 230111132 in words is "two hundred thirty million, one hundred eleven thousand, one hundred thirty-two".

Divisors: 1 2 4 157 314 628 366419 732838 1465676 57527783 115055566 230111132