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12831941 = 113113557
BaseRepresentation
bin110000111100…
…110011000101
3220010221010002
4300330303011
511241110231
61135011045
7214032623
oct60746305
926127102
1012831941
117274911
124369a85
132873885
1419c0513
1511d70cb
hexc3ccc5

12831941 has 4 divisors (see below), whose sum is σ = 12945612. Its totient is φ = 12718272.

The previous prime is 12831937. The next prime is 12831961. The reversal of 12831941 is 14913821.

12831941 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.

It can be written as a sum of positive squares in 2 ways, for example, as 894916 + 11937025 = 946^2 + 3455^2 .

It is a cyclic number.

It is not a de Polignac number, because 12831941 - 22 = 12831937 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12831911) 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, 56666 + ... + 56891.

It is an arithmetic number, because the mean of its divisors is an integer number (3236403).

Almost surely, 212831941 is an apocalyptic number.

It is an amenable number.

12831941 is a deficient number, since it is larger than the sum of its proper divisors (113671).

12831941 is a wasteful number, since it uses less digits than its factorization.

12831941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113670.

The product of its digits is 1728, while the sum is 29.

The square root of 12831941 is about 3582.1698731356. The cubic root of 12831941 is about 234.1158325394.

The spelling of 12831941 in words is "twelve million, eight hundred thirty-one thousand, nine hundred forty-one".

Divisors: 1 113 113557 12831941