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131330113231 = 732816402287
BaseRepresentation
bin111101001001111100…
…0100111111011001111
3110112222121202222221211
41322103320213323033
54122431002110411
6140155432035251
712326324354332
oct1722370477317
9415877688854
10131330113231
1150773474969
1221552232b27
13c4cc624195
1464dbdc8619
153639a01221
hex1e93e27ecf

131330113231 has 8 divisors (see below), whose sum is σ = 133602945984. Its totient is φ = 129070085760.

The previous prime is 131330113207. The next prime is 131330113273. The reversal of 131330113231 is 132311033131.

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

It is a cyclic number.

It is not a de Polignac number, because 131330113231 - 211 = 131330111183 is a prime.

It is a super-2 number, since 2×1313301132312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131330113331) 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, 3180631 + ... + 3221656.

It is an arithmetic number, because the mean of its divisors is an integer number (16700368248).

Almost surely, 2131330113231 is an apocalyptic number.

131330113231 is a deficient number, since it is larger than the sum of its proper divisors (2272832753).

131330113231 is an equidigital number, since it uses as much as digits as its factorization.

131330113231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6402641.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 131330113231 its reverse (132311033131), we get a palindrome (263641146362).

The spelling of 131330113231 in words is "one hundred thirty-one billion, three hundred thirty million, one hundred thirteen thousand, two hundred thirty-one".

Divisors: 1 73 281 20513 6402287 467366951 1799042647 131330113231