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1230323512 = 231147297467
BaseRepresentation
bin100100101010101…
…0011111100111000
310011202001220120111
41021111103330320
510004430323022
6322030034104
742326402005
oct11125237470
93152056514
101230323512
115815382a0
122a4048934
13167b807a2
14b95848ac
157302a477
hex49553f38

1230323512 has 32 divisors (see below), whose sum is σ = 2570123520. Its totient is φ = 547337440.

The previous prime is 1230323461. The next prime is 1230323513. The reversal of 1230323512 is 2153230321.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230323513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144598 + ... + 152869.

It is an arithmetic number, because the mean of its divisors is an integer number (80316360).

Almost surely, 21230323512 is an apocalyptic number.

It is an amenable number.

1230323512 is an abundant number, since it is smaller than the sum of its proper divisors (1339800008).

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

1230323512 is a wasteful number, since it uses less digits than its factorization.

1230323512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297531 (or 297527 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 1230323512 is about 35075.9677272060. The cubic root of 1230323512 is about 1071.5351975290.

Adding to 1230323512 its reverse (2153230321), we get a palindrome (3383553833).

The spelling of 1230323512 in words is "one billion, two hundred thirty million, three hundred twenty-three thousand, five hundred twelve".

Divisors: 1 2 4 8 11 22 44 47 88 94 188 376 517 1034 2068 4136 297467 594934 1189868 2379736 3272137 6544274 13088548 13980949 26177096 27961898 55923796 111847592 153790439 307580878 615161756 1230323512