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12313001 = 15497949
BaseRepresentation
bin101110111110…
…000110101001
3212011120021002
4232332012221
511123004001
61115524345
7206441651
oct56760651
925146232
1012313001
116a4aa38
1241596b5
1327215cc
1418c7361
15113346b
hexbbe1a9

12313001 has 4 divisors (see below), whose sum is σ = 12322500. Its totient is φ = 12303504.

The previous prime is 12312991. The next prime is 12313003. The reversal of 12313001 is 10031321.

12313001 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 10031321 = 31323591.

It can be written as a sum of positive squares in 2 ways, for example, as 5017600 + 7295401 = 2240^2 + 2701^2 .

It is a cyclic number.

It is not a de Polignac number, because 12313001 - 210 = 12311977 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (12313003) 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, 2426 + ... + 5523.

It is an arithmetic number, because the mean of its divisors is an integer number (3080625).

Almost surely, 212313001 is an apocalyptic number.

It is an amenable number.

12313001 is a deficient number, since it is larger than the sum of its proper divisors (9499).

12313001 is an equidigital number, since it uses as much as digits as its factorization.

12313001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9498.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 12313001 is about 3508.9886007224. The cubic root of 12313001 is about 230.9163255849.

Adding to 12313001 its reverse (10031321), we get a palindrome (22344322).

The spelling of 12313001 in words is "twelve million, three hundred thirteen thousand, one".

Divisors: 1 1549 7949 12313001