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10123213 = 49920287
BaseRepresentation
bin100110100111…
…011111001101
3201001022102211
4212213133031
510042420323
61000550421
7152021512
oct46473715
921038384
1010123213
1157947a1
123482411
132135989
1414b7309
15d4e70d
hex9a77cd

10123213 has 4 divisors (see below), whose sum is σ = 10144000. Its totient is φ = 10102428.

The previous prime is 10123207. The next prime is 10123241. The reversal of 10123213 is 31232101.

10123213 is digitally balanced in base 3, 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 Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-10123213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10123193 and 10123202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10123513) 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, 9645 + ... + 10642.

It is an arithmetic number, because the mean of its divisors is an integer number (2536000).

Almost surely, 210123213 is an apocalyptic number.

It is an amenable number.

10123213 is a deficient number, since it is larger than the sum of its proper divisors (20787).

10123213 is an equidigital number, since it uses as much as digits as its factorization.

10123213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20786.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 10123213 is about 3181.6997029890. The cubic root of 10123213 is about 216.3247073899.

Adding to 10123213 its reverse (31232101), we get a palindrome (41355314).

It can be divided in two parts, 1012 and 3213, that added together give a square (4225 = 652).

The spelling of 10123213 in words is "ten million, one hundred twenty-three thousand, two hundred thirteen".

Divisors: 1 499 20287 10123213