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10030123231 = 23203432277
BaseRepresentation
bin10010101011101011…
…11000100011011111
3221220000110001102121
421111311320203133
5131020202420411
64335140203411
7503361432532
oct112565704337
927800401377
1010030123231
11428781a047
121b3b099567
13c3b00657b
146b2164a19
153da85d571
hex255d788df

10030123231 has 4 divisors (see below), whose sum is σ = 10030578712. Its totient is φ = 10029667752.

The previous prime is 10030123127. The next prime is 10030123241. The reversal of 10030123231 is 13232103001.

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 10030123231 - 211 = 10030121183 is a prime.

It is a super-2 number, since 2×100301232312 (a number of 21 digits) 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 (10030123241) 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, 192936 + ... + 239341.

It is an arithmetic number, because the mean of its divisors is an integer number (2507644678).

Almost surely, 210030123231 is an apocalyptic number.

10030123231 is a deficient number, since it is larger than the sum of its proper divisors (455481).

10030123231 is an equidigital number, since it uses as much as digits as its factorization.

10030123231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455480.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 10030123231 its reverse (13232103001), we get a palindrome (23262226232).

The spelling of 10030123231 in words is "ten billion, thirty million, one hundred twenty-three thousand, two hundred thirty-one".

Divisors: 1 23203 432277 10030123231