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131030102123 = 353371190091
BaseRepresentation
bin111101000001000000…
…0001011000001101011
3110112012201020212002022
41322002000023001223
54121322201231443
6140105553455055
712316022330354
oct1720200130153
9415181225068
10131030102123
115062a0930a8
122148987148b
13c48242130b
1464b0210d2b
15361d4dde68
hex1e8200b06b

131030102123 has 4 divisors (see below), whose sum is σ = 131401292568. Its totient is φ = 130658911680.

The previous prime is 131030102087. The next prime is 131030102129. The reversal of 131030102123 is 321201030131.

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

It is not a de Polignac number, because 131030102123 - 210 = 131030101099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131030102129) 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, 185594693 + ... + 185595398.

It is an arithmetic number, because the mean of its divisors is an integer number (32850323142).

Almost surely, 2131030102123 is an apocalyptic number.

131030102123 is a deficient number, since it is larger than the sum of its proper divisors (371190445).

131030102123 is an equidigital number, since it uses as much as digits as its factorization.

131030102123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371190444.

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

Adding to 131030102123 its reverse (321201030131), we get a palindrome (452231132254).

The spelling of 131030102123 in words is "one hundred thirty-one billion, thirty million, one hundred two thousand, one hundred twenty-three".

Divisors: 1 353 371190091 131030102123