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10213231 = 74333931
BaseRepresentation
bin100110111101…
…011101101111
3201012212220211
4212331131233
510103310411
61002523251
7152545120
oct46753557
921185824
1010213231
115846396
123506527
132167942
1414dc047
15d6b221
hex9bd76f

10213231 has 8 divisors (see below), whose sum is σ = 11944064. Its totient is φ = 8550360.

The previous prime is 10213207. The next prime is 10213253. The reversal of 10213231 is 13231201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10213231 - 27 = 10213103 is a prime.

It is a super-2 number, since 2×102132312 = 208620174918722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10213261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16665 + ... + 17266.

It is an arithmetic number, because the mean of its divisors is an integer number (1493008).

Almost surely, 210213231 is an apocalyptic number.

10213231 is a deficient number, since it is larger than the sum of its proper divisors (1730833).

10213231 is an equidigital number, since it uses as much as digits as its factorization.

10213231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33981.

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

The square root of 10213231 is about 3195.8146066379. The cubic root of 10213231 is about 216.9640196031.

Adding to 10213231 its reverse (13231201), we get a palindrome (23444432).

The spelling of 10213231 in words is "ten million, two hundred thirteen thousand, two hundred thirty-one".

Divisors: 1 7 43 301 33931 237517 1459033 10213231