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131100142 = 265999469
BaseRepresentation
bin1111101000001…
…10110111101110
3100010200120120211
413310012313232
5232030201032
621001533034
73151222105
oct764066756
9303616524
10131100142
1168003528
1237aa417a
1321212464
14135a903c
15b799747
hex7d06dee

131100142 has 8 divisors (see below), whose sum is σ = 196950600. Its totient is φ = 65449944.

The previous prime is 131100131. The next prime is 131100149. The reversal of 131100142 is 241001131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131100149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48417 + ... + 51052.

It is an arithmetic number, because the mean of its divisors is an integer number (24618825).

Almost surely, 2131100142 is an apocalyptic number.

131100142 is a deficient number, since it is larger than the sum of its proper divisors (65850458).

131100142 is an equidigital number, since it uses as much as digits as its factorization.

131100142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100130.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 131100142 is about 11449.8970301047. The cubic root of 131100142 is about 508.0046887161.

Adding to 131100142 its reverse (241001131), we get a palindrome (372101273).

The spelling of 131100142 in words is "one hundred thirty-one million, one hundred thousand, one hundred forty-two".

Divisors: 1 2 659 1318 99469 198938 65550071 131100142