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231064111 = 1931392299
BaseRepresentation
bin11011100010111…
…00001000101111
3121002210021101001
431301130020233
5433123022421
634532301131
75504004205
oct1561341057
9532707331
10231064111
1110947a983
12654717a7
1338b42735
142298b075
1515443691
hexdc5c22f

231064111 has 8 divisors (see below), whose sum is σ = 251072000. Its totient is φ = 211840920.

The previous prime is 231064103. The next prime is 231064117. The reversal of 231064111 is 111460132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231064111 - 23 = 231064103 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231064117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195561 + ... + 196738.

It is an arithmetic number, because the mean of its divisors is an integer number (31384000).

Almost surely, 2231064111 is an apocalyptic number.

231064111 is a deficient number, since it is larger than the sum of its proper divisors (20007889).

231064111 is a wasteful number, since it uses less digits than its factorization.

231064111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392349.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 231064111 is about 15200.7931043087. The cubic root of 231064111 is about 613.6360023216.

The spelling of 231064111 in words is "two hundred thirty-one million, sixty-four thousand, one hundred eleven".

Divisors: 1 19 31 589 392299 7453681 12161269 231064111