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3123132231 = 331149225383
BaseRepresentation
bin1011101000100111…
…0011011101000111
322001122201120000010
42322021303131013
522344010212411
61233523321303
7140252120532
oct27211633507
98048646003
103123132231
111362a2151a
12731b20233
133aa06704b
14218ad9a19
151342b77a6
hexba273747

3123132231 has 16 divisors (see below), whose sum is σ = 4327372800. Its totient is φ = 2001392160.

The previous prime is 3123132193. The next prime is 3123132241. The reversal of 3123132231 is 1322313213.

It is not a de Polignac number, because 3123132231 - 217 = 3123001159 is a prime.

It is a super-2 number, since 2×31231322312 = 19507909864622074722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3123132198 and 3123132207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3123132241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98835 + ... + 126548.

It is an arithmetic number, because the mean of its divisors is an integer number (270460800).

Almost surely, 23123132231 is an apocalyptic number.

3123132231 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

3123132231 is a deficient number, since it is larger than the sum of its proper divisors (1204240569).

3123132231 is a wasteful number, since it uses less digits than its factorization.

3123132231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225566.

The product of its digits is 648, while the sum is 21.

The square root of 3123132231 is about 55884.9911067363. The cubic root of 3123132231 is about 1461.7175369404.

Adding to 3123132231 its reverse (1322313213), we get a palindrome (4445445444).

The spelling of 3123132231 in words is "three billion, one hundred twenty-three million, one hundred thirty-two thousand, two hundred thirty-one".

Divisors: 1 3 31 93 149 447 4619 13857 225383 676149 6986873 20960619 33582067 100746201 1041044077 3123132231