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131200310123 = 997313155551
BaseRepresentation
bin111101000110000100…
…1011101101101101011
3110112122120112022120022
41322030021131231223
54122144234410443
6140134513551055
712323160143531
oct1721411355553
9415576468508
10131200310123
1150707177973
122151687548b
13c4ab7771cc
1464c8a7a151
15362d410e68
hex1e8c25db6b

131200310123 has 4 divisors (see below), whose sum is σ = 131213475648. Its totient is φ = 131187144600.

The previous prime is 131200310053. The next prime is 131200310141. The reversal of 131200310123 is 321013002131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131200310123 - 214 = 131200293739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131200310023) 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, 6567803 + ... + 6587748.

It is an arithmetic number, because the mean of its divisors is an integer number (32803368912).

Almost surely, 2131200310123 is an apocalyptic number.

131200310123 is a deficient number, since it is larger than the sum of its proper divisors (13165525).

131200310123 is an equidigital number, since it uses as much as digits as its factorization.

131200310123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13165524.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 131200310123 its reverse (321013002131), we get a palindrome (452213312254).

The spelling of 131200310123 in words is "one hundred thirty-one billion, two hundred million, three hundred ten thousand, one hundred twenty-three".

Divisors: 1 9973 13155551 131200310123