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131302043 = 479274117
BaseRepresentation
bin1111101001110…
…00001010011011
3100011001211112122
413310320022123
5232103131133
621010131455
73153022535
oct764701233
9304054478
10131302043
1168131194
1237b80b8b
1321283322
141361c855
15b7d9498
hex7d3829b

131302043 has 4 divisors (see below), whose sum is σ = 131576640. Its totient is φ = 131027448.

The previous prime is 131302037. The next prime is 131302051. The reversal of 131302043 is 340203131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 340203131 = 536418927.

It is a cyclic number.

It is not a de Polignac number, because 131302043 - 26 = 131301979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131302943) 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, 136580 + ... + 137537.

It is an arithmetic number, because the mean of its divisors is an integer number (32894160).

Almost surely, 2131302043 is an apocalyptic number.

131302043 is a deficient number, since it is larger than the sum of its proper divisors (274597).

131302043 is an equidigital number, since it uses as much as digits as its factorization.

131302043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274596.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 131302043 is about 11458.7103550094. The cubic root of 131302043 is about 508.2653394559.

Adding to 131302043 its reverse (340203131), we get a palindrome (471505174).

The spelling of 131302043 in words is "one hundred thirty-one million, three hundred two thousand, forty-three".

Divisors: 1 479 274117 131302043