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1315287012 = 223138431327
BaseRepresentation
bin100111001100101…
…1010111111100100
310101122221111120210
41032121122333210
510143203141022
6334303055420
744410520004
oct11631327744
93348844523
101315287012
11615499666
123085a1570
1317c65b150
14c6980004
157a70ea0c
hex4e65afe4

1315287012 has 24 divisors (see below), whose sum is σ = 3305080576. Its totient is φ = 404703648.

The previous prime is 1315287007. The next prime is 1315287013. The reversal of 1315287012 is 2107825131.

It is not an unprimeable number, because it can be changed into a prime (1315287013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4215508 + ... + 4215819.

Almost surely, 21315287012 is an apocalyptic number.

1315287012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1315287012 is an abundant number, since it is smaller than the sum of its proper divisors (1989793564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1315287012 is a wasteful number, since it uses less digits than its factorization.

1315287012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8431347 (or 8431345 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 1315287012 is about 36266.8858878178. The cubic root of 1315287012 is about 1095.6542067609.

The spelling of 1315287012 in words is "one billion, three hundred fifteen million, two hundred eighty-seven thousand, twelve".

Divisors: 1 2 3 4 6 12 13 26 39 52 78 156 8431327 16862654 25293981 33725308 50587962 101175924 109607251 219214502 328821753 438429004 657643506 1315287012