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12313900 = 2252196481
BaseRepresentation
bin101110111110…
…010100101100
3212011121111101
4232332110230
511123021100
61115532444
7206444404
oct56762454
925147441
1012313900
116a50685
12415a124
132721b41
1418c7804
15113386a
hexbbe52c

12313900 has 36 divisors (see below), whose sum is σ = 28131880. Its totient is φ = 4665600.

The previous prime is 12313877. The next prime is 12313907. The reversal of 12313900 is 931321.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (12313907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1341 + ... + 5140.

Almost surely, 212313900 is an apocalyptic number.

12313900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12313900 is an abundant number, since it is smaller than the sum of its proper divisors (15817980).

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

12313900 is a wasteful number, since it uses less digits than its factorization.

12313900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6514 (or 6507 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 12313900 is about 3509.1166979740. The cubic root of 12313900 is about 230.9219453556.

The spelling of 12313900 in words is "twelve million, three hundred thirteen thousand, nine hundred".

Divisors: 1 2 4 5 10 19 20 25 38 50 76 95 100 190 380 475 950 1900 6481 12962 25924 32405 64810 123139 129620 162025 246278 324050 492556 615695 648100 1231390 2462780 3078475 6156950 12313900