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131444321230 = 2519691812217
BaseRepresentation
bin111101001101010110…
…0010010101111001110
3110120021120200100212201
41322122230102233032
54123144221234410
6140215031552114
712332212203265
oct1723254225716
9416246610781
10131444321230
1150821990042
122158452b63a
13c51a1a0991
14650d2375dc
153644a6083a
hex1e9ab12bce

131444321230 has 16 divisors (see below), whose sum is σ = 249052398480. Its totient is φ = 49810479552.

The previous prime is 131444321221. The next prime is 131444321237. The reversal of 131444321230 is 32123444131.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131444321237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345905919 + ... + 345906298.

It is an arithmetic number, because the mean of its divisors is an integer number (15565774905).

Almost surely, 2131444321230 is an apocalyptic number.

131444321230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131444321230 is a deficient number, since it is larger than the sum of its proper divisors (117608077250).

131444321230 is a wasteful number, since it uses less digits than its factorization.

131444321230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691812243.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 131444321230 its reverse (32123444131), we get a palindrome (163567765361).

The spelling of 131444321230 in words is "one hundred thirty-one billion, four hundred forty-four million, three hundred twenty-one thousand, two hundred thirty".

Divisors: 1 2 5 10 19 38 95 190 691812217 1383624434 3459061085 6918122170 13144432123 26288864246 65722160615 131444321230