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131030312130 = 23251455892357
BaseRepresentation
bin111101000001000000…
…0111110010011000010
3110112012201122112011100
41322002000332103002
54121322224442010
6140110002155230
712316024163544
oct1720200762302
9415181575140
10131030312130
115062a216963
1221489952b16
13c482495a93
1464b0267694
15361d5312c0
hex1e8203e4c2

131030312130 has 24 divisors (see below), whose sum is σ = 340678811772. Its totient is φ = 34941416544.

The previous prime is 131030312099. The next prime is 131030312131. The reversal of 131030312130 is 31213030131.

It is a happy number.

131030312130 is a `hidden beast` number, since 1 + 310 + 30 + 312 + 13 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 113709909681 + 17320402449 = 337209^2 + 131607^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (131030312131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 727946089 + ... + 727946268.

Almost surely, 2131030312130 is an apocalyptic number.

131030312130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131030312130 is an abundant number, since it is smaller than the sum of its proper divisors (209648499642).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131030312130 is a wasteful number, since it uses less digits than its factorization.

131030312130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455892370 (or 1455892367 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 131030312130 its reverse (31213030131), we get a palindrome (162243342261).

The spelling of 131030312130 in words is "one hundred thirty-one billion, thirty million, three hundred twelve thousand, one hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 1455892357 2911784714 4367677071 7279461785 8735354142 13103031213 14558923570 21838385355 26206062426 43676770710 65515156065 131030312130