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12683141 = 64719603
BaseRepresentation
bin110000011000…
…011110000101
3212212100222222
4300120132011
511221330031
61131502125
7212543042
oct60303605
925770888
1012683141
117183039
1242b7945
132820c23
1419821c9
1511a7e7b
hexc18785

12683141 has 4 divisors (see below), whose sum is σ = 12703392. Its totient is φ = 12662892.

The previous prime is 12683137. The next prime is 12683183. The reversal of 12683141 is 14138621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14138621 = 72019803.

It is a cyclic number.

It is not a de Polignac number, because 12683141 - 22 = 12683137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12683141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12683641) 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, 9155 + ... + 10448.

It is an arithmetic number, because the mean of its divisors is an integer number (3175848).

Almost surely, 212683141 is an apocalyptic number.

It is an amenable number.

12683141 is a deficient number, since it is larger than the sum of its proper divisors (20251).

12683141 is an equidigital number, since it uses as much as digits as its factorization.

12683141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20250.

The product of its digits is 1152, while the sum is 26.

The square root of 12683141 is about 3561.3397759832. The cubic root of 12683141 is about 233.2073712422.

The spelling of 12683141 in words is "twelve million, six hundred eighty-three thousand, one hundred forty-one".

Divisors: 1 647 19603 12683141