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115331141 = 187961379
BaseRepresentation
bin1101101111111…
…01000001000101
322001000102120202
412313331001011
5214011044031
615235540245
72600204252
oct667750105
9261012522
10115331141
115a112aa2
123275a685
131ab80aa3
1411462429
15a1d22cb
hex6dfd045

115331141 has 4 divisors (see below), whose sum is σ = 115394400. Its totient is φ = 115267884.

The previous prime is 115331093. The next prime is 115331143. The reversal of 115331141 is 141133511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 141133511 = 1391015349.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-115331141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115331143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28811 + ... + 32568.

It is an arithmetic number, because the mean of its divisors is an integer number (28848600).

Almost surely, 2115331141 is an apocalyptic number.

It is an amenable number.

115331141 is a deficient number, since it is larger than the sum of its proper divisors (63259).

115331141 is an equidigital number, since it uses as much as digits as its factorization.

115331141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63258.

The product of its digits is 180, while the sum is 20.

The square root of 115331141 is about 10739.2337249917. The cubic root of 115331141 is about 486.7607252887.

Adding to 115331141 its reverse (141133511), we get a palindrome (256464652).

The spelling of 115331141 in words is "one hundred fifteen million, three hundred thirty-one thousand, one hundred forty-one".

Divisors: 1 1879 61379 115331141