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213900000000 = 283582331
BaseRepresentation
bin1100011100110101101…
…1101111101100000000
3202110010001120211212020
43013031123233230000
512001031400000000
6242133031201440
721311433000231
oct3071533575400
9673101524766
10213900000000
1182794a78a05
1235556816280
131722acb754b
14a4d21a7088
15586d902ba0
hex31cd6efb00

213900000000 has 648 divisors, whose sum is σ = 766499607552. Its totient is φ = 52800000000.

The previous prime is 213899999981. The next prime is 213900000029. The reversal of 213900000000 is 9312.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 6899999985 + ... + 6900000015.

Almost surely, 2213900000000 is an apocalyptic number.

213900000000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213900000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (383249803776).

213900000000 is an abundant number, since it is smaller than the sum of its proper divisors (552599607552).

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

213900000000 is an frugal number, since it uses more digits than its factorization.

213900000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113 (or 64 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 213900000000 its reverse (9312), we get a palindrome (213900009312).

The spelling of 213900000000 in words is "two hundred thirteen billion, nine hundred million", and thus it is an aban number.