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10103112331 = 13777162487
BaseRepresentation
bin10010110100011000…
…10100001010001011
3222002002210021122121
421122030110022023
5131142344043311
64350304432111
7505236015664
oct113214241213
928062707577
1010103112331
114314a41914
121b5b618637
13c501807a0
146bbb2436b
153e1e79b71
hex25a31428b

10103112331 has 4 divisors (see below), whose sum is σ = 10880274832. Its totient is φ = 9325949832.

The previous prime is 10103112317. The next prime is 10103112353. The reversal of 10103112331 is 13321130101.

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 10103112331 - 29 = 10103111819 is a prime.

It is a super-2 number, since 2×101031123312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10103112311) 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, 388581231 + ... + 388581256.

It is an arithmetic number, because the mean of its divisors is an integer number (2720068708).

Almost surely, 210103112331 is an apocalyptic number.

10103112331 is a deficient number, since it is larger than the sum of its proper divisors (777162501).

10103112331 is an equidigital number, since it uses as much as digits as its factorization.

10103112331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777162500.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 10103112331 its reverse (13321130101), we get a palindrome (23424242432).

The spelling of 10103112331 in words is "ten billion, one hundred three million, one hundred twelve thousand, three hundred thirty-one".

Divisors: 1 13 777162487 10103112331