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31441105 = 5191392381
BaseRepresentation
bin111011111110…
…0000011010001
32012011101002101
41313330003101
531022103410
63041520401
7531150013
oct167740321
965141071
1031441105
1116825193
12a643101
13668ac07
1442661b3
152b60d3a
hex1dfc0d1

31441105 has 16 divisors (see below), whose sum is σ = 40017600. Its totient is φ = 23647680.

The previous prime is 31441103. The next prime is 31441129. The reversal of 31441105 is 50114413.

It is not a de Polignac number, because 31441105 - 21 = 31441103 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (31441103) 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, 12015 + ... + 14395.

It is an arithmetic number, because the mean of its divisors is an integer number (2501100).

Almost surely, 231441105 is an apocalyptic number.

It is an amenable number.

31441105 is a deficient number, since it is larger than the sum of its proper divisors (8576495).

31441105 is a wasteful number, since it uses less digits than its factorization.

31441105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2544.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 31441105 is about 5607.2368417965. The cubic root of 31441105 is about 315.6210306333.

Adding to 31441105 its reverse (50114413), we get a palindrome (81555518).

The spelling of 31441105 in words is "thirty-one million, four hundred forty-one thousand, one hundred five".

Divisors: 1 5 19 95 139 695 2381 2641 11905 13205 45239 226195 330959 1654795 6288221 31441105