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131031044123 = 7137136632997
BaseRepresentation
bin111101000001000001…
…1110001000000011011
3110112012210000201021012
41322002003301000123
54121322421402443
6140110030004135
712316033332620
oct1720203610033
9415183021235
10131031044123
115062a676911
122148a04664b
13c482691005
1464b03b8347
15361d628118
hex1e820f101b

131031044123 has 8 divisors (see below), whose sum is σ = 150842829792. Its totient is φ = 111492524736.

The previous prime is 131031044107. The next prime is 131031044141. The reversal of 131031044123 is 321440130131.

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 131031044123 - 24 = 131031044107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131031044623) 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, 68315540 + ... + 68317457.

It is an arithmetic number, because the mean of its divisors is an integer number (18855353724).

Almost surely, 2131031044123 is an apocalyptic number.

131031044123 is a deficient number, since it is larger than the sum of its proper divisors (19811785669).

131031044123 is a wasteful number, since it uses less digits than its factorization.

131031044123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136633141.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 131031044123 its reverse (321440130131), we get a palindrome (452471174254).

The spelling of 131031044123 in words is "one hundred thirty-one billion, thirty-one million, forty-four thousand, one hundred twenty-three".

Divisors: 1 7 137 959 136632997 956430979 18718720589 131031044123