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10123987211 = 1323181187069
BaseRepresentation
bin10010110110110111…
…11100100100001011
3222010120001211121022
421123123330210023
5131213220042321
64352332103055
7505611320462
oct113333744413
928116054538
1010123987211
1143257aa488
121b66604a8b
13c545ac1a0
146c07d99d9
153e3beedab
hex25b6fc90b

10123987211 has 16 divisors (see below), whose sum is σ = 11439704640. Its totient is φ = 8889471360.

The previous prime is 10123987207. The next prime is 10123987217. The reversal of 10123987211 is 11278932101.

It is a cyclic number.

It is not a de Polignac number, because 10123987211 - 22 = 10123987207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10123987217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39416 + ... + 147653.

It is an arithmetic number, because the mean of its divisors is an integer number (714981540).

Almost surely, 210123987211 is an apocalyptic number.

10123987211 is a deficient number, since it is larger than the sum of its proper divisors (1315717429).

10123987211 is a wasteful number, since it uses less digits than its factorization.

10123987211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187286.

The product of its (nonzero) digits is 6048, while the sum is 35.

The spelling of 10123987211 in words is "ten billion, one hundred twenty-three million, nine hundred eighty-seven thousand, two hundred eleven".

Divisors: 1 13 23 181 299 2353 4163 54119 187069 2431897 4302587 33859489 55933631 440173357 778768247 10123987211