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124431131 = 1121153611
BaseRepresentation
bin1110110101010…
…10101100011011
322200010202102102
413122222230123
5223323244011
620202554015
73040434656
oct732525433
9280122372
10124431131
1164268a50
123580890b
131ca18ab6
141275089d
15adcd73b
hex76aab1b

124431131 has 8 divisors (see below), whose sum is σ = 136388928. Its totient is φ = 112581000.

The previous prime is 124431119. The next prime is 124431161. The reversal of 124431131 is 131134421.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-124431131 is a prime.

It is a super-2 number, since 2×1244311312 = 30966212723878322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124431161) 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, 24485 + ... + 29126.

It is an arithmetic number, because the mean of its divisors is an integer number (17048616).

Almost surely, 2124431131 is an apocalyptic number.

124431131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

124431131 is a deficient number, since it is larger than the sum of its proper divisors (11957797).

124431131 is a wasteful number, since it uses less digits than its factorization.

124431131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53833.

The product of its digits is 288, while the sum is 20.

The square root of 124431131 is about 11154.8702816304. The cubic root of 124431131 is about 499.2403544618.

Adding to 124431131 its reverse (131134421), we get a palindrome (255565552).

The spelling of 124431131 in words is "one hundred twenty-four million, four hundred thirty-one thousand, one hundred thirty-one".

Divisors: 1 11 211 2321 53611 589721 11311921 124431131