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230131113220 = 22515919722819
BaseRepresentation
bin1101011001010011100…
…0100001110100000100
3211000000020021211101201
43112110320201310010
512232302031110340
6253415404232244
722424602121101
oct3262470416404
9730006254351
10230131113220
1189664017568
123872653b684
13189168cc658
14b1d1ad9aa8
155ebd84b79a
hex3594e21d04

230131113220 has 24 divisors (see below), whose sum is σ = 483306364800. Its totient is φ = 92046535392.

The previous prime is 230131113209. The next prime is 230131113263. The reversal of 230131113220 is 22311131032.

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, 43030 + ... + 679789.

It is an arithmetic number, because the mean of its divisors is an integer number (20137765200).

Almost surely, 2230131113220 is an apocalyptic number.

230131113220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

230131113220 is an abundant number, since it is smaller than the sum of its proper divisors (253175251580).

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

230131113220 is a wasteful number, since it uses less digits than its factorization.

230131113220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738747 (or 738745 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 230131113220 its reverse (22311131032), we get a palindrome (252442244252).

The spelling of 230131113220 in words is "two hundred thirty billion, one hundred thirty-one million, one hundred thirteen thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 15919 31838 63676 79595 159190 318380 722819 1445638 2891276 3614095 7228190 14456380 11506555661 23013111322 46026222644 57532778305 115065556610 230131113220