Search a number
-
+
12994931 = 23564997
BaseRepresentation
bin110001100100…
…100101110011
3220110012200202
4301210211303
511311314211
61142305415
7215312045
oct61444563
926405622
1012994931
117376314
12442826b
1328ccb11
141a23a95
15121a53b
hexc64973

12994931 has 4 divisors (see below), whose sum is σ = 13559952. Its totient is φ = 12429912.

The previous prime is 12994913. The next prime is 12994937. The reversal of 12994931 is 13949921.

12994931 is digitally balanced in base 2, 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 an emirpimes, since its reverse is a distinct semiprime: 13949921 = 15788853.

It is a cyclic number.

It is not a de Polignac number, because 12994931 - 26 = 12994867 is a prime.

It is a super-2 number, since 2×129949312 = 337736463389522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12994937) 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, 282476 + ... + 282521.

It is an arithmetic number, because the mean of its divisors is an integer number (3389988).

Almost surely, 212994931 is an apocalyptic number.

12994931 is a deficient number, since it is larger than the sum of its proper divisors (565021).

12994931 is an equidigital number, since it uses as much as digits as its factorization.

12994931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565020.

The product of its digits is 17496, while the sum is 38.

The square root of 12994931 is about 3604.8482631035. The cubic root of 12994931 is about 235.1029034771.

The spelling of 12994931 in words is "twelve million, nine hundred ninety-four thousand, nine hundred thirty-one".

Divisors: 1 23 564997 12994931