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13631413 = 31439723
BaseRepresentation
bin110011111111…
…111110110101
3221122112210011
4303333332311
511442201123
61204100221
7223602505
oct63777665
927575704
1013631413
117770534
124694671
132a93733
141b4ba05
1512e3e0d
hexcfffb5

13631413 has 4 divisors (see below), whose sum is σ = 14071168. Its totient is φ = 13191660.

The previous prime is 13631411. The next prime is 13631459. The reversal of 13631413 is 31413631.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13631413 - 21 = 13631411 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 (13631411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219831 + ... + 219892.

It is an arithmetic number, because the mean of its divisors is an integer number (3517792).

Almost surely, 213631413 is an apocalyptic number.

It is an amenable number.

13631413 is a deficient number, since it is larger than the sum of its proper divisors (439755).

13631413 is an equidigital number, since it uses as much as digits as its factorization.

13631413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439754.

The product of its digits is 648, while the sum is 22.

The square root of 13631413 is about 3692.0743491972. The cubic root of 13631413 is about 238.8802759309.

The spelling of 13631413 in words is "thirteen million, six hundred thirty-one thousand, four hundred thirteen".

Divisors: 1 31 439723 13631413