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10021231 = 114492029
BaseRepresentation
bin100110001110…
…100101101111
3200212010112201
4212032211233
510031134411
6554442331
7151115263
oct46164557
920763481
1010021231
115725110
1234333a7
1320cb42c
14148c0a3
15d2e3c1
hex98e96f

10021231 has 8 divisors (see below), whose sum is σ = 10962000. Its totient is φ = 9085440.

The previous prime is 10021217. The next prime is 10021237. The reversal of 10021231 is 13212001.

10021231 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 10021231 - 217 = 9890159 is a prime.

It is a super-2 number, since 2×100212312 = 200850141510722, 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 (10021237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3925 + ... + 5953.

It is an arithmetic number, because the mean of its divisors is an integer number (1370250).

Almost surely, 210021231 is an apocalyptic number.

10021231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10021231 is a deficient number, since it is larger than the sum of its proper divisors (940769).

10021231 is a wasteful number, since it uses less digits than its factorization.

10021231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2489.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 10021231 is about 3165.6327961404. The cubic root of 10021231 is about 215.5958305707.

Adding to 10021231 its reverse (13212001), we get a palindrome (23233232).

The spelling of 10021231 in words is "ten million, twenty-one thousand, two hundred thirty-one".

Divisors: 1 11 449 2029 4939 22319 911021 10021231