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131141123 = 235755639
BaseRepresentation
bin1111101000100…
…00111000000011
3100010202122210122
413310100320003
5232033003443
621002450455
73151452431
oct764207003
9303678718
10131141123
11680312a3
1237b03a2b
1321227cc9
14135b9d51
15b7a6968
hex7d10e03

131141123 has 4 divisors (see below), whose sum is σ = 131199120. Its totient is φ = 131083128.

The previous prime is 131141117. The next prime is 131141149. The reversal of 131141123 is 321141131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321141131 = 2811142851.

It is a cyclic number.

It is not a de Polignac number, because 131141123 - 24 = 131141107 is a prime.

It is a super-2 number, since 2×1311411232 = 34395988283402258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131141323) 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, 25463 + ... + 30176.

It is an arithmetic number, because the mean of its divisors is an integer number (32799780).

Almost surely, 2131141123 is an apocalyptic number.

131141123 is a deficient number, since it is larger than the sum of its proper divisors (57997).

131141123 is an equidigital number, since it uses as much as digits as its factorization.

131141123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57996.

The product of its digits is 72, while the sum is 17.

The square root of 131141123 is about 11451.6864696865. The cubic root of 131141123 is about 508.0576161220.

Adding to 131141123 its reverse (321141131), we get a palindrome (452282254).

The spelling of 131141123 in words is "one hundred thirty-one million, one hundred forty-one thousand, one hundred twenty-three".

Divisors: 1 2357 55639 131141123