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115230231 = 3219719491
BaseRepresentation
bin1101101111001…
…00011000010111
322000211022011100
412313210120113
5213444331411
615233441143
72566304124
oct667443027
9260738140
10115230231
115a0541a6
12327101b3
131ab46b8c
141143774b
15a1b2456
hex6de4617

115230231 has 24 divisors (see below), whose sum is σ = 177690240. Its totient is φ = 71744400.

The previous prime is 115230221. The next prime is 115230259. The reversal of 115230231 is 132032511.

It is not a de Polignac number, because 115230231 - 27 = 115230103 is a prime.

It is a super-2 number, since 2×1152302312 = 26556012272626722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115230221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7396 + ... + 16886.

It is an arithmetic number, because the mean of its divisors is an integer number (7403760).

Almost surely, 2115230231 is an apocalyptic number.

115230231 is a deficient number, since it is larger than the sum of its proper divisors (62460009).

115230231 is a wasteful number, since it uses less digits than its factorization.

115230231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9587 (or 9584 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 115230231 is about 10734.5345031818. The cubic root of 115230231 is about 486.6187186660.

Adding to 115230231 its reverse (132032511), we get a palindrome (247262742).

The spelling of 115230231 in words is "one hundred fifteen million, two hundred thirty thousand, two hundred thirty-one".

Divisors: 1 3 9 19 57 71 171 213 639 1349 4047 9491 12141 28473 85419 180329 540987 673861 1622961 2021583 6064749 12803359 38410077 115230231