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23231213300 = 22521371695709
BaseRepresentation
bin10101101000101100…
…000010111011110100
32012222000121220121102
4111220230002323310
5340034142311200
614401113305232
71451456024561
oct255054027364
965860556542
1023231213300
119941461439
124604105218
132262c54779
1411a54b7868
1590e7826d5
hex568b02ef4

23231213300 has 36 divisors (see below), whose sum is σ = 50779731660. Its totient is φ = 9224651520.

The previous prime is 23231213297. The next prime is 23231213321. The reversal of 23231213300 is 331213232.

It can be written as a sum of positive squares in 6 ways, for example, as 488763664 + 22742449636 = 22108^2 + 150806^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 834155 + ... + 861554.

Almost surely, 223231213300 is an apocalyptic number.

23231213300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23231213300 is an abundant number, since it is smaller than the sum of its proper divisors (27548518360).

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

23231213300 is a wasteful number, since it uses less digits than its factorization.

23231213300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1695860 (or 1695853 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 23231213300 its reverse (331213232), we get a palindrome (23562426532).

The spelling of 23231213300 in words is "twenty-three billion, two hundred thirty-one million, two hundred thirteen thousand, three hundred".

Divisors: 1 2 4 5 10 20 25 50 100 137 274 548 685 1370 2740 3425 6850 13700 1695709 3391418 6782836 8478545 16957090 33914180 42392725 84785450 169570900 232312133 464624266 929248532 1161560665 2323121330 4646242660 5807803325 11615606650 23231213300