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231104307 = 37171095939
BaseRepresentation
bin11011100011001…
…01111100110011
3121002212022111210
431301211330303
5433130314212
634533211203
75504232330
oct1561457463
9532768453
10231104307
111094a80a5
1265490b03
1338b57b15
142299b987
151545053c
hexdc65f33

231104307 has 32 divisors (see below), whose sum is σ = 376358400. Its totient is φ = 123130368.

The previous prime is 231104303. The next prime is 231104347. The reversal of 231104307 is 703401132.

It is not a de Polignac number, because 231104307 - 22 = 231104303 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (231104303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35944 + ... + 41882.

It is an arithmetic number, because the mean of its divisors is an integer number (11761200).

Almost surely, 2231104307 is an apocalyptic number.

231104307 is a deficient number, since it is larger than the sum of its proper divisors (145254093).

231104307 is a wasteful number, since it uses less digits than its factorization.

231104307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6075.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 231104307 is about 15202.1152146667. The cubic root of 231104307 is about 613.6715830420.

Adding to 231104307 its reverse (703401132), we get a palindrome (934505439).

The spelling of 231104307 in words is "two hundred thirty-one million, one hundred four thousand, three hundred seven".

Divisors: 1 3 7 17 21 51 109 119 327 357 763 1853 2289 5559 5939 12971 17817 38913 41573 100963 124719 302889 647351 706741 1942053 2120223 4531457 11004967 13594371 33014901 77034769 231104307