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131888071079 = 271486671849
BaseRepresentation
bin111101011010100100…
…1000100000110100111
3110121102111200012020022
41322311021010012213
54130101321233304
6140331043025355
712346211051522
oct1726511040647
9417374605208
10131888071079
1150a2a417956
122168906b25b
13c58b0bc85b
146552149bb9
15366d9b6ebe
hex1eb52441a7

131888071079 has 4 divisors (see below), whose sum is σ = 132374743200. Its totient is φ = 131401398960.

The previous prime is 131888071039. The next prime is 131888071111. The reversal of 131888071079 is 970170888131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 970170888131 = 3131295835101.

It is a cyclic number.

It is not a de Polignac number, because 131888071079 - 224 = 131871293863 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131888071079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131888071039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243335654 + ... + 243336195.

It is an arithmetic number, because the mean of its divisors is an integer number (33093685800).

Almost surely, 2131888071079 is an apocalyptic number.

131888071079 is a deficient number, since it is larger than the sum of its proper divisors (486672121).

131888071079 is an equidigital number, since it uses as much as digits as its factorization.

131888071079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486672120.

The product of its (nonzero) digits is 677376, while the sum is 53.

The spelling of 131888071079 in words is "one hundred thirty-one billion, eight hundred eighty-eight million, seventy-one thousand, seventy-nine".

Divisors: 1 271 486671849 131888071079