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131313131131 = 731329449009
BaseRepresentation
bin111101001001011011…
…1110101111001111011
3110112221102211012220011
41322102313311321323
54122412130144011
6140154024042351
712326030125000
oct1722267657173
9415842735804
10131313131131
1150764925a76
12215486033b7
13c4c8c595c0
1464d9a478a7
153638299621
hex1e92df5e7b

131313131131 has 16 divisors (see below), whose sum is σ = 164914456000. Its totient is φ = 103896100224.

The previous prime is 131313131101. The next prime is 131313131149. The reversal of 131313131131 is 131131313131.

It is not a de Polignac number, because 131313131131 - 221 = 131311033979 is a prime.

It is a super-2 number, since 2×1313131311312 (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131313131101) 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, 14720046 + ... + 14728963.

It is an arithmetic number, because the mean of its divisors is an integer number (10307153500).

Almost surely, 2131313131131 is an apocalyptic number.

131313131131 is a deficient number, since it is larger than the sum of its proper divisors (33601324869).

131313131131 is an equidigital number, since it uses as much as digits as its factorization.

131313131131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29449043 (or 29449029 counting only the distinct ones).

The product of its digits is 243, while the sum is 22.

Adding to 131313131131 its reverse (131131313131), we get a palindrome (262444444262).

The spelling of 131313131131 in words is "one hundred thirty-one billion, three hundred thirteen million, one hundred thirty-one thousand, one hundred thirty-one".

Divisors: 1 7 13 49 91 343 637 4459 29449009 206143063 382837117 1443001441 2679859819 10101010087 18759018733 131313131131