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105232291385 = 5131618958329
BaseRepresentation
bin110001000000001010…
…1010101011000111001
3101001121211010021200112
41202000111111120321
53211003431311020
6120202033114105
710413516501224
oct1420025253071
9331554107615
10105232291385
11406a0981061
121848a0b8935
139c00820550
145143d0c5bb
152b0d7782c5
hex1880555639

105232291385 has 8 divisors (see below), whose sum is σ = 135992499720. Its totient is φ = 77709999744.

The previous prime is 105232291319. The next prime is 105232291421. The reversal of 105232291385 is 583192232501.

It can be written as a sum of positive squares in 4 ways, for example, as 2003099536 + 103229191849 = 44756^2 + 321293^2 .

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

It is not a de Polignac number, because 105232291385 - 216 = 105232225849 is a prime.

It is a super-2 number, since 2×1052322913852 (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 809479100 + ... + 809479229.

It is an arithmetic number, because the mean of its divisors is an integer number (16999062465).

Almost surely, 2105232291385 is an apocalyptic number.

It is an amenable number.

105232291385 is a deficient number, since it is larger than the sum of its proper divisors (30760208335).

105232291385 is a wasteful number, since it uses less digits than its factorization.

105232291385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1618958347.

The product of its (nonzero) digits is 129600, while the sum is 41.

The spelling of 105232291385 in words is "one hundred five billion, two hundred thirty-two million, two hundred ninety-one thousand, three hundred eighty-five".

Divisors: 1 5 13 65 1618958329 8094791645 21046458277 105232291385