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131246986189 = 1115179639923
BaseRepresentation
bin111101000111011101…
…1100001001111001101
3110112202211100201002111
41322032323201033031
54122243212024224
6140143302224021
712324264655414
oct1721673411715
9415684321074
10131246986189
1150730558330
122152a425011
13c4b833a697
1464d0d4a47b
153632580d94
hex1e8eee13cd

131246986189 has 16 divisors (see below), whose sum is σ = 144159358464. Its totient is φ = 118498446000.

The previous prime is 131246986183. The next prime is 131246986217. The reversal of 131246986189 is 981689642131.

It is a de Polignac number, because none of the positive numbers 2k-131246986189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131246986183) 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, 13221582 + ... + 13231504.

It is an arithmetic number, because the mean of its divisors is an integer number (9009959904).

Almost surely, 2131246986189 is an apocalyptic number.

It is an amenable number.

131246986189 is a deficient number, since it is larger than the sum of its proper divisors (12912372275).

131246986189 is a wasteful number, since it uses less digits than its factorization.

131246986189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18048.

The product of its digits is 4478976, while the sum is 58.

The spelling of 131246986189 in words is "one hundred thirty-one billion, two hundred forty-six million, nine hundred eighty-six thousand, one hundred eighty-nine".

Divisors: 1 11 151 1661 7963 9923 87593 109153 1202413 1498373 13226543 16482103 79016849 869185339 11931544199 131246986189