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10228431 = 33409477
BaseRepresentation
bin100111000001…
…001011001111
3201020122202210
4213001023033
510104302211
61003121503
7152640333
oct47011317
921218683
1010228431
115856854
123513293
132171835
1415037c3
15d709a6
hex9c12cf

10228431 has 4 divisors (see below), whose sum is σ = 13637912. Its totient is φ = 6818952.

The previous prime is 10228429. The next prime is 10228433. The reversal of 10228431 is 13482201.

10228431 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: 13482201 = 34494067.

It is an interprime number because it is at equal distance from previous prime (10228429) and next prime (10228433).

It is not a de Polignac number, because 10228431 - 21 = 10228429 is a prime.

It is a super-2 number, since 2×102284312 = 209241601443522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10228398 and 10228407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10228433) 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, 1704736 + ... + 1704741.

It is an arithmetic number, because the mean of its divisors is an integer number (3409478).

Almost surely, 210228431 is an apocalyptic number.

10228431 is a deficient number, since it is larger than the sum of its proper divisors (3409481).

10228431 is an equidigital number, since it uses as much as digits as its factorization.

10228431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3409480.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 10228431 is about 3198.1918328956. The cubic root of 10228431 is about 217.0715996112.

It can be divided in two parts, 1022 and 8431, that added together give a triangular number (9453 = T137).

The spelling of 10228431 in words is "ten million, two hundred twenty-eight thousand, four hundred thirty-one".

Divisors: 1 3 3409477 10228431