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131304147 = 3136197569
BaseRepresentation
bin1111101001110…
…00101011010011
3100011001221102120
413310320223103
5232103213042
621010145323
73153031632
oct764705323
9304057376
10131304147
1168132827
1237b82243
1321284280
141361d519
15b7d9dec
hex7d38ad3

131304147 has 32 divisors (see below), whose sum is σ = 193945920. Its totient is φ = 78520320.

The previous prime is 131304143. The next prime is 131304149. The reversal of 131304147 is 741403131.

It is not a de Polignac number, because 131304147 - 22 = 131304143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131304143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 230479 + ... + 231047.

It is an arithmetic number, because the mean of its divisors is an integer number (6060810).

Almost surely, 2131304147 is an apocalyptic number.

131304147 is a deficient number, since it is larger than the sum of its proper divisors (62641773).

131304147 is a wasteful number, since it uses less digits than its factorization.

131304147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 131304147 is about 11458.8021625299. The cubic root of 131304147 is about 508.2680542767.

Adding to 131304147 its reverse (741403131), we get a palindrome (872707278).

The spelling of 131304147 in words is "one hundred thirty-one million, three hundred four thousand, one hundred forty-seven".

Divisors: 1 3 13 39 61 97 183 291 569 793 1261 1707 2379 3783 5917 7397 17751 22191 34709 55193 76921 104127 165579 230763 451217 717509 1353651 2152527 3366773 10100319 43768049 131304147