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10120231 = 11920021
BaseRepresentation
bin100110100110…
…110000100111
3201001011100101
4212212300213
510042321411
61000524531
7152010022
oct46466047
921034311
1010120231
115792530
123480747
132134504
1414b61b9
15d4d8c1
hex9a6c27

10120231 has 4 divisors (see below), whose sum is σ = 11040264. Its totient is φ = 9200200.

The previous prime is 10120213. The next prime is 10120237. The reversal of 10120231 is 13202101.

10120231 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: 13202101 = 111200191.

It is a cyclic number.

It is not a de Polignac number, because 10120231 - 25 = 10120199 is a prime.

It is a super-2 number, since 2×101202312 = 204838150986722, 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 (10120237) 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, 460000 + ... + 460021.

It is an arithmetic number, because the mean of its divisors is an integer number (2760066).

Almost surely, 210120231 is an apocalyptic number.

10120231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10120231 is a deficient number, since it is larger than the sum of its proper divisors (920033).

10120231 is an equidigital number, since it uses as much as digits as its factorization.

10120231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920032.

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

The square root of 10120231 is about 3181.2310510241. The cubic root of 10120231 is about 216.3034643443.

Adding to 10120231 its reverse (13202101), we get a palindrome (23322332).

The spelling of 10120231 in words is "ten million, one hundred twenty thousand, two hundred thirty-one".

Divisors: 1 11 920021 10120231