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131783210031 = 3113993430607
BaseRepresentation
bin111101010111011100…
…1000011010000101111
3110121011012100200220210
41322232321003100233
54124343000210111
6140312415313503
712343465542264
oct1725671032057
9417135320823
10131783210031
1150986206230
1221659b1b893
13c5724665b5
14654225126b
1536646a20a6
hex1eaee4342f

131783210031 has 8 divisors (see below), whose sum is σ = 191684669184. Its totient is φ = 79868612120.

The previous prime is 131783209997. The next prime is 131783210047. The reversal of 131783210031 is 130012387131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131783210031 - 27 = 131783209903 is a prime.

It is a super-2 number, since 2×1317832100312 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131783210081) 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, 1996715271 + ... + 1996715336.

It is an arithmetic number, because the mean of its divisors is an integer number (23960583648).

Almost surely, 2131783210031 is an apocalyptic number.

131783210031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

131783210031 is a deficient number, since it is larger than the sum of its proper divisors (59901459153).

131783210031 is a wasteful number, since it uses less digits than its factorization.

131783210031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3993430621.

The product of its (nonzero) digits is 3024, while the sum is 30.

Adding to 131783210031 its reverse (130012387131), we get a palindrome (261795597162).

The spelling of 131783210031 in words is "one hundred thirty-one billion, seven hundred eighty-three million, two hundred ten thousand, thirty-one".

Divisors: 1 3 11 33 3993430607 11980291821 43927736677 131783210031