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131370485 = 526274097
BaseRepresentation
bin1111101010010…
…00110111110101
3100011012022102112
413311020313311
5232112323420
621011420405
73153426221
oct765106765
9304168375
10131370485
1168178654
1237bb4705
13212a851c
1413639781
15b7ee8c5
hex7d48df5

131370485 has 4 divisors (see below), whose sum is σ = 157644588. Its totient is φ = 105096384.

The previous prime is 131370439. The next prime is 131370527. The reversal of 131370485 is 584073131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 584073131 = 1734357243.

It can be written as a sum of positive squares in 2 ways, for example, as 60575089 + 70795396 = 7783^2 + 8414^2 .

It is a cyclic number.

It is not a de Polignac number, because 131370485 - 28 = 131370229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13137044 + ... + 13137053.

It is an arithmetic number, because the mean of its divisors is an integer number (39411147).

Almost surely, 2131370485 is an apocalyptic number.

It is an amenable number.

131370485 is a deficient number, since it is larger than the sum of its proper divisors (26274103).

131370485 is an equidigital number, since it uses as much as digits as its factorization.

131370485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26274102.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 131370485 is about 11461.6964276672. The cubic root of 131370485 is about 508.3536362639.

The spelling of 131370485 in words is "one hundred thirty-one million, three hundred seventy thousand, four hundred eighty-five".

Divisors: 1 5 26274097 131370485