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65231513 is a prime number
BaseRepresentation
bin1111100011010…
…1101010011001
311112202002210222
43320311222121
5113144402023
610250045425
71421313224
oct370655231
9145662728
1065231513
1133904446
1219a19875
131068c239
1489405bb
155ad7cc8
hex3e35a99

65231513 has 2 divisors, whose sum is σ = 65231514. Its totient is φ = 65231512.

The previous prime is 65231479. The next prime is 65231563. The reversal of 65231513 is 31513256.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34904464 + 30327049 = 5908^2 + 5507^2 .

It is a cyclic number.

It is not a de Polignac number, because 65231513 - 210 = 65230489 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65231563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32615756 + 32615757.

It is an arithmetic number, because the mean of its divisors is an integer number (32615757).

Almost surely, 265231513 is an apocalyptic number.

It is an amenable number.

65231513 is a deficient number, since it is larger than the sum of its proper divisors (1).

65231513 is an equidigital number, since it uses as much as digits as its factorization.

65231513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2700, while the sum is 26.

The square root of 65231513 is about 8076.6028130644. The cubic root of 65231513 is about 402.5493693542.

Adding to 65231513 its reverse (31513256), we get a palindrome (96744769).

The spelling of 65231513 in words is "sixty-five million, two hundred thirty-one thousand, five hundred thirteen".