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13292131 = 30234397
BaseRepresentation
bin110010101101…
…001001100011
3221000022101011
4302231021203
511400322011
61152521351
7220660366
oct62551143
927008334
1013292131
117559636
124550257
1329a5188
141aa00dd
151278621
hexcad263

13292131 has 4 divisors (see below), whose sum is σ = 13299552. Its totient is φ = 13284712.

The previous prime is 13292119. The next prime is 13292173. The reversal of 13292131 is 13129231.

13292131 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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13292131 - 25 = 13292099 is a prime.

It is a super-2 number, since 2×132921312 = 353361493042322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13293131) 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, 825 + ... + 5221.

It is an arithmetic number, because the mean of its divisors is an integer number (3324888).

Almost surely, 213292131 is an apocalyptic number.

13292131 is a deficient number, since it is larger than the sum of its proper divisors (7421).

13292131 is an equidigital number, since it uses as much as digits as its factorization.

13292131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7420.

The product of its digits is 324, while the sum is 22.

The square root of 13292131 is about 3645.8374895214. The cubic root of 13292131 is about 236.8817144315.

The spelling of 13292131 in words is "thirteen million, two hundred ninety-two thousand, one hundred thirty-one".

Divisors: 1 3023 4397 13292131