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12313870 = 251231387
BaseRepresentation
bin101110111110…
…010100001110
3212011121110021
4232332110032
511123020440
61115532354
7206444332
oct56762416
925147407
1012313870
116a50658
12415a0ba
132721b1a
1418c77c2
15113384a
hexbbe50e

12313870 has 8 divisors (see below), whose sum is σ = 22164984. Its totient is φ = 4925544.

The previous prime is 12313813. The next prime is 12313877. The reversal of 12313870 is 7831321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12313877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 615684 + ... + 615703.

It is an arithmetic number, because the mean of its divisors is an integer number (2770623).

Almost surely, 212313870 is an apocalyptic number.

12313870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12313870 is a deficient number, since it is larger than the sum of its proper divisors (9851114).

12313870 is a wasteful number, since it uses less digits than its factorization.

12313870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231394.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 12313870 is about 3509.1124233914. The cubic root of 12313870 is about 230.9217578259.

The spelling of 12313870 in words is "twelve million, three hundred thirteen thousand, eight hundred seventy".

Divisors: 1 2 5 10 1231387 2462774 6156935 12313870