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13831051 = 131063927
BaseRepresentation
bin110100110000…
…101110001011
3222000200122011
4310300232023
512020043201
61212240351
7225363523
oct64605613
928020564
1013831051
117897523
1247700b7
132b33570
141ba0683
151333151
hexd30b8b

13831051 has 4 divisors (see below), whose sum is σ = 14894992. Its totient is φ = 12767112.

The previous prime is 13831049. The next prime is 13831067. The reversal of 13831051 is 15013831.

13831051 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 is a cyclic number.

It is not a de Polignac number, because 13831051 - 21 = 13831049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13831351) 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, 531951 + ... + 531976.

It is an arithmetic number, because the mean of its divisors is an integer number (3723748).

Almost surely, 213831051 is an apocalyptic number.

13831051 is a deficient number, since it is larger than the sum of its proper divisors (1063941).

13831051 is a wasteful number, since it uses less digits than its factorization.

13831051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063940.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 13831051 is about 3719.0121000072. The cubic root of 13831051 is about 240.0407974626.

Adding to 13831051 its reverse (15013831), we get a palindrome (28844882).

The spelling of 13831051 in words is "thirteen million, eight hundred thirty-one thousand, fifty-one".

Divisors: 1 13 1063927 13831051