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231025132 = 22138949919
BaseRepresentation
bin11011100010100…
…10100111101100
3121002201021220101
431301102213230
5433120301012
634531400444
75503452442
oct1561224754
9532637811
10231025132
11109453668
1265453124
1338b2aa80
142297ab92
1515436d57
hexdc529ec

231025132 has 24 divisors (see below), whose sum is σ = 440294400. Its totient is φ = 105426816.

The previous prime is 231025129. The next prime is 231025229. The reversal of 231025132 is 231520132.

231025132 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2310251322 = 106745223231234848, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20332 + ... + 29587.

It is an arithmetic number, because the mean of its divisors is an integer number (18345600).

Almost surely, 2231025132 is an apocalyptic number.

It is an amenable number.

231025132 is a deficient number, since it is larger than the sum of its proper divisors (209269268).

231025132 is a wasteful number, since it uses less digits than its factorization.

231025132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50025 (or 50023 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 231025132 is about 15199.5109131840. The cubic root of 231025132 is about 613.6014949249.

Adding to 231025132 its reverse (231520132), we get a palindrome (462545264).

The spelling of 231025132 in words is "two hundred thirty-one million, twenty-five thousand, one hundred thirty-two".

Divisors: 1 2 4 13 26 52 89 178 356 1157 2314 4628 49919 99838 199676 648947 1297894 2595788 4442791 8885582 17771164 57756283 115512566 231025132