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131210031332 = 2276942656057
BaseRepresentation
bin111101000110010111…
…0100011000011100100
3110112200020211012120002
41322030232203003210
54122204232000312
6140135502200432
712323335602332
oct1721456430344
9415606735502
10131210031332
1150711707626
1221519b83118
13c4b079bbc3
1464ca08ab52
15362e1d14c2
hex1e8cba30e4

131210031332 has 12 divisors (see below), whose sum is σ = 229916152620. Its totient is φ = 65519702016.

The previous prime is 131210031319. The next prime is 131210031341. The reversal of 131210031332 is 233130012131.

It can be written as a sum of positive squares in 2 ways, for example, as 66965018176 + 64245013156 = 258776^2 + 253466^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21324953 + ... + 21331104.

It is an arithmetic number, because the mean of its divisors is an integer number (19159679385).

Almost surely, 2131210031332 is an apocalyptic number.

It is an amenable number.

131210031332 is a deficient number, since it is larger than the sum of its proper divisors (98706121288).

131210031332 is a wasteful number, since it uses less digits than its factorization.

131210031332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42656830 (or 42656828 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 131210031332 its reverse (233130012131), we get a palindrome (364340043463).

The spelling of 131210031332 in words is "one hundred thirty-one billion, two hundred ten million, thirty-one thousand, three hundred thirty-two".

Divisors: 1 2 4 769 1538 3076 42656057 85312114 170624228 32802507833 65605015666 131210031332