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1230886111 = 713117111551
BaseRepresentation
bin100100101011101…
…1101010011011111
310011210010111022111
41021113131103133
510010101323421
6322050054451
742334234150
oct11127352337
93153114274
101230886111
11581891a54
122a427a427
131680198a0
14b968d927
15730dbee1
hex495dd4df

1230886111 has 16 divisors (see below), whose sum is σ = 1516361728. Its totient is φ = 972972000.

The previous prime is 1230886081. The next prime is 1230886127. The reversal of 1230886111 is 1116880321.

It is not a de Polignac number, because 1230886111 - 25 = 1230886079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230886711) 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, 100786 + ... + 112336.

It is an arithmetic number, because the mean of its divisors is an integer number (94772608).

Almost surely, 21230886111 is an apocalyptic number.

1230886111 is a deficient number, since it is larger than the sum of its proper divisors (285475617).

1230886111 is a wasteful number, since it uses less digits than its factorization.

1230886111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12742.

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 1230886111 is about 35083.9865323198. The cubic root of 1230886111 is about 1071.6985022097.

The spelling of 1230886111 in words is "one billion, two hundred thirty million, eight hundred eighty-six thousand, one hundred eleven".

Divisors: 1 7 13 91 1171 8197 11551 15223 80857 106561 150163 1051141 13526221 94683547 175840873 1230886111