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2131144030 = 254719723017
BaseRepresentation
bin111111100000110…
…1010110101011110
312111112010100000101
41333001222311132
513331033102110
6551245451314
7103545265621
oct17701526536
95445110011
102131144030
119a3a80064
124b5870b3a
1327c6a3792
14163075db8
15c716a13a
hex7f06ad5e

2131144030 has 32 divisors (see below), whose sum is σ = 3937735296. Its totient is φ = 830049024.

The previous prime is 2131144013. The next prime is 2131144033. The reversal of 2131144030 is 304411312.

It is a junction number, because it is equal to n+sod(n) for n = 2131143989 and 2131144007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131144033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81082 + ... + 104098.

It is an arithmetic number, because the mean of its divisors is an integer number (123054228).

Almost surely, 22131144030 is an apocalyptic number.

2131144030 is a deficient number, since it is larger than the sum of its proper divisors (1806591266).

2131144030 is a wasteful number, since it uses less digits than its factorization.

2131144030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23268.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2131144030 is about 46164.3155478341. The cubic root of 2131144030 is about 1286.8786643473.

Adding to 2131144030 its reverse (304411312), we get a palindrome (2435555342).

It can be divided in two parts, 21311 and 44030, that added together give a triangular number (65341 = T361).

The spelling of 2131144030 in words is "two billion, one hundred thirty-one million, one hundred forty-four thousand, thirty".

Divisors: 1 2 5 10 47 94 197 235 394 470 985 1970 9259 18518 23017 46034 46295 92590 115085 230170 1081799 2163598 4534349 5408995 9068698 10817990 22671745 45343490 213114403 426228806 1065572015 2131144030