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131099079 = 3208720939
BaseRepresentation
bin1111101000001…
…10100111000111
3100010200112010110
413310012213013
5232030132304
621001524103
73151216026
oct764064707
9303615113
10131099079
1168002751
1237aa3633
1321211b27
14135a88bd
15b799289
hex7d069c7

131099079 has 8 divisors (see below), whose sum is σ = 174890880. Its totient is φ = 87353336.

The previous prime is 131099077. The next prime is 131099117. The reversal of 131099079 is 970990131.

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 131099079 - 21 = 131099077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131099071) 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, 4209 + ... + 16730.

It is an arithmetic number, because the mean of its divisors is an integer number (21861360).

Almost surely, 2131099079 is an apocalyptic number.

131099079 is a deficient number, since it is larger than the sum of its proper divisors (43791801).

131099079 is a wasteful number, since it uses less digits than its factorization.

131099079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23029.

The product of its (nonzero) digits is 15309, while the sum is 39.

The square root of 131099079 is about 11449.8506103792. The cubic root of 131099079 is about 508.0033156933.

The spelling of 131099079 in words is "one hundred thirty-one million, ninety-nine thousand, seventy-nine".

Divisors: 1 3 2087 6261 20939 62817 43699693 131099079