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12531015010 = 2517509144817
BaseRepresentation
bin10111010101110100…
…00001110101100010
31012100022022112000001
423222322001311202
5201130414440020
65431235050214
7622346604313
oct135272016542
935308275001
1012531015010
115350482058
12251874096a
1312491888a7
1486c36860a
154d51b350a
hex2eae81d62

12531015010 has 32 divisors (see below), whose sum is σ = 23929726320. Its totient is φ = 4708257792.

The previous prime is 12531014989. The next prime is 12531015011. The reversal of 12531015010 is 1051013521.

12531015010 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 10231524801 + 2299490209 = 101151^2 + 47953^2 .

It is not an unprimeable number, because it can be changed into a prime (12531015011) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 14122 + ... + 158938.

Almost surely, 212531015010 is an apocalyptic number.

12531015010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12531015010 is a deficient number, since it is larger than the sum of its proper divisors (11398711310).

12531015010 is a wasteful number, since it uses less digits than its factorization.

12531015010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145350.

The product of its (nonzero) digits is 150, while the sum is 19.

Adding to 12531015010 its reverse (1051013521), we get a palindrome (13582028531).

The spelling of 12531015010 in words is "twelve billion, five hundred thirty-one million, fifteen thousand, ten".

Divisors: 1 2 5 10 17 34 85 170 509 1018 2545 5090 8653 17306 43265 86530 144817 289634 724085 1448170 2461889 4923778 12309445 24618890 73711853 147423706 368559265 737118530 1253101501 2506203002 6265507505 12531015010