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230131032212 = 2285429673457
BaseRepresentation
bin1101011001010011100…
…0001110000010010100
3211000000020010201021102
43112110320032002110
512232302021012322
6253415402405232
722424601332654
oct3262470160224
9730006121242
10230131032212
1189663a71714
1238726500818
13189168a1813
14b1d1ab8364
155ebd832792
hex3594e0e094

230131032212 has 12 divisors (see below), whose sum is σ = 402734618580. Its totient is φ = 115063998336.

The previous prime is 230131032203. The next prime is 230131032217. The reversal of 230131032212 is 212230131032.

It can be written as a sum of positive squares in 2 ways, for example, as 22226039056 + 207904993156 = 149084^2 + 455966^2 .

It is a super-2 number, since 2×2301310322122 (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230131032217) 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, 4988 + ... + 678444.

It is an arithmetic number, because the mean of its divisors is an integer number (33561218215).

Almost surely, 2230131032212 is an apocalyptic number.

It is an amenable number.

230131032212 is a deficient number, since it is larger than the sum of its proper divisors (172603586368).

230131032212 is a wasteful number, since it uses less digits than its factorization.

230131032212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758890 (or 758888 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 230131032212 its reverse (212230131032), we get a palindrome (442361163244).

It can be divided in two parts, 230131032 and 212, that multiplied together give a palindrome (48787778784).

The spelling of 230131032212 in words is "two hundred thirty billion, one hundred thirty-one million, thirty-two thousand, two hundred twelve".

Divisors: 1 2 4 85429 170858 341716 673457 1346914 2693828 57532758053 115065516106 230131032212