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231204030 = 23561126341
BaseRepresentation
bin11011100011111…
…10010010111110
3121010001101022020
431301332102332
5433142012110
634535301010
75505126141
oct1561762276
9533041266
10231204030
11109566012
126551a766
1338b91325
14229c6058
151546ed70
hexdc7e4be

231204030 has 32 divisors (see below), whose sum is σ = 563990688. Its totient is φ = 60643200.

The previous prime is 231204011. The next prime is 231204041. The reversal of 231204030 is 30402132.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61341 + ... + 65000.

It is an arithmetic number, because the mean of its divisors is an integer number (17624709).

Almost surely, 2231204030 is an apocalyptic number.

231204030 is an abundant number, since it is smaller than the sum of its proper divisors (332786658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231204030 is a wasteful number, since it uses less digits than its factorization.

231204030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126412.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 231204030 is about 15205.3947663321. The cubic root of 231204030 is about 613.7598380986.

Adding to 231204030 its reverse (30402132), we get a palindrome (261606162).

The spelling of 231204030 in words is "two hundred thirty-one million, two hundred four thousand, thirty".

Divisors: 1 2 3 5 6 10 15 30 61 122 183 305 366 610 915 1830 126341 252682 379023 631705 758046 1263410 1895115 3790230 7706801 15413602 23120403 38534005 46240806 77068010 115602015 231204030