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10200031 = 36727793
BaseRepresentation
bin100110111010…
…001111011111
3201012012210221
4212322033133
510102400111
61002342211
7152461462
oct46721737
921165727
1010200031
115837486
1234ba967
13216192a
1414d72d9
15d67371
hex9ba3df

10200031 has 4 divisors (see below), whose sum is σ = 10228192. Its totient is φ = 10171872.

The previous prime is 10200011. The next prime is 10200037. The reversal of 10200031 is 13000201.

Adding to 10200031 its reverse (13000201), we get a palindrome (23200232).

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10200031 - 25 = 10199999 is a prime.

It is a super-2 number, since 2×102000312 = 208081264801922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10199987 and 10200023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10200037) 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, 13530 + ... + 14263.

It is an arithmetic number, because the mean of its divisors is an integer number (2557048).

Almost surely, 210200031 is an apocalyptic number.

10200031 is a deficient number, since it is larger than the sum of its proper divisors (28161).

10200031 is an equidigital number, since it uses as much as digits as its factorization.

10200031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28160.

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 10200031 is about 3193.7487377688. The cubic root of 10200031 is about 216.8705082300.

The spelling of 10200031 in words is "ten million, two hundred thousand, thirty-one".

Divisors: 1 367 27793 10200031