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115230131 = 1731415333
BaseRepresentation
bin1101101111001…
…00010110110011
322000211022000122
412313210112303
5213444331011
615233440455
72566303622
oct667442663
9260738018
10115230131
115a054115
123271012b
131ab46b13
14114376b9
15a1b23db
hex6de45b3

115230131 has 16 divisors (see below), whose sum is σ = 129040128. Its totient is φ = 102374400.

The previous prime is 115230103. The next prime is 115230133. The reversal of 115230131 is 131032511.

It is a de Polignac number, because none of the positive numbers 2k-115230131 is a prime.

It is a super-2 number, since 2×1152301312 = 26555966180554322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115230133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18941 + ... + 24273.

It is an arithmetic number, because the mean of its divisors is an integer number (8065008).

Almost surely, 2115230131 is an apocalyptic number.

115230131 is a deficient number, since it is larger than the sum of its proper divisors (13809997).

115230131 is a wasteful number, since it uses less digits than its factorization.

115230131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5422.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 115230131 is about 10734.5298453169. The cubic root of 115230131 is about 486.6185778989.

Adding to 115230131 its reverse (131032511), we get a palindrome (246262642).

The spelling of 115230131 in words is "one hundred fifteen million, two hundred thirty thousand, one hundred thirty-one".

Divisors: 1 17 31 41 527 697 1271 5333 21607 90661 165323 218653 2810491 3717101 6778243 115230131