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10220231 = 71460033
BaseRepresentation
bin100110111111…
…001011000111
3201020020112002
4212333023013
510104021411
61003015515
7152604410
oct46771307
921206462
1010220231
11585067a
12350a59b
13216ab98
141500807
15d6d33b
hex9bf2c7

10220231 has 4 divisors (see below), whose sum is σ = 11680272. Its totient is φ = 8760192.

The previous prime is 10220159. The next prime is 10220239. The reversal of 10220231 is 13202201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13202201 = 97713513.

It is not a de Polignac number, because 10220231 - 214 = 10203847 is a prime.

It is a super-2 number, since 2×102202312 = 208906243386722, 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 (10220239) 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, 730010 + ... + 730023.

It is an arithmetic number, because the mean of its divisors is an integer number (2920068).

Almost surely, 210220231 is an apocalyptic number.

10220231 is a deficient number, since it is larger than the sum of its proper divisors (1460041).

10220231 is an equidigital number, since it uses as much as digits as its factorization.

10220231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1460040.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 10220231 is about 3196.9096014745. The cubic root of 10220231 is about 217.0135762776.

Adding to 10220231 its reverse (13202201), we get a palindrome (23422432).

The spelling of 10220231 in words is "ten million, two hundred twenty thousand, two hundred thirty-one".

Divisors: 1 7 1460033 10220231