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131242011 = 355778541
BaseRepresentation
bin1111101001010…
…01100000011011
3100010221210012020
413310221200123
5232044221021
621004545523
73152352525
oct764514033
9303853166
10131242011
11680a007a
1237b522a3
1321261bc4
1413604a15
15b7c67c6
hex7d2981b

131242011 has 8 divisors (see below), whose sum is σ = 175305744. Its totient is φ = 87336480.

The previous prime is 131241959. The next prime is 131242037. The reversal of 131242011 is 110242131.

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

It is not a de Polignac number, because 131242011 - 217 = 131110939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131242061) 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, 37600 + ... + 40941.

It is an arithmetic number, because the mean of its divisors is an integer number (21913218).

Almost surely, 2131242011 is an apocalyptic number.

131242011 is a deficient number, since it is larger than the sum of its proper divisors (44063733).

131242011 is an equidigital number, since it uses as much as digits as its factorization.

131242011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79101.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 131242011 is about 11456.0905635387. The cubic root of 131242011 is about 508.1878670992.

Adding to 131242011 its reverse (110242131), we get a palindrome (241484142).

The spelling of 131242011 in words is "one hundred thirty-one million, two hundred forty-two thousand, eleven".

Divisors: 1 3 557 1671 78541 235623 43747337 131242011