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23151002340 = 22351931999223
BaseRepresentation
bin10101100011111010…
…000100001011100100
32012202102200202212010
4111203322010023210
5334403124033330
614345130154220
71446463162434
oct254372041344
965672622763
1023151002340
119900156794
1245a1282970
13224c44c36b
1411989982c4
159076db3b0
hex563e842e4

23151002340 has 48 divisors (see below), whose sum is σ = 65158708608. Its totient is φ = 6141609984.

The previous prime is 23151002327. The next prime is 23151002341. The reversal of 23151002340 is 4320015132.

It is not an unprimeable number, because it can be changed into a prime (23151002341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 988032 + ... + 1011191.

It is an arithmetic number, because the mean of its divisors is an integer number (1357473096).

Almost surely, 223151002340 is an apocalyptic number.

23151002340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23151002340 is an abundant number, since it is smaller than the sum of its proper divisors (42007706268).

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

23151002340 is a wasteful number, since it uses less digits than its factorization.

23151002340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1999428 (or 1999426 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 23151002340 its reverse (4320015132), we get a palindrome (27471017472).

The spelling of 23151002340 in words is "twenty-three billion, one hundred fifty-one million, two thousand, three hundred forty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 193 386 579 772 965 1158 1930 2316 2895 3860 5790 11580 1999223 3998446 5997669 7996892 9996115 11995338 19992230 23990676 29988345 39984460 59976690 119953380 385850039 771700078 1157550117 1543400156 1929250195 2315100234 3858500390 4630200468 5787750585 7717000780 11575501170 23151002340