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1312130982 = 23435085779
BaseRepresentation
bin100111000110101…
…1000011110100110
310101110000011022210
41032031120132212
510141401142412
6334111304250
744341633521
oct11615303646
93343004283
101312130982
11613733478
1230751b086
1317bac4786
14c639bbb8
157a2d983c
hex4e3587a6

1312130982 has 16 divisors (see below), whose sum is σ = 2685291840. Its totient is φ = 427205352.

The previous prime is 1312130971. The next prime is 1312130983. The reversal of 1312130982 is 2890312131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312130983) 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, 2542632 + ... + 2543147.

It is an arithmetic number, because the mean of its divisors is an integer number (167830740).

Almost surely, 21312130982 is an apocalyptic number.

1312130982 is an abundant number, since it is smaller than the sum of its proper divisors (1373160858).

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

1312130982 is a wasteful number, since it uses less digits than its factorization.

1312130982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5085827.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 1312130982 is about 36223.3485751939. The cubic root of 1312130982 is about 1094.7771644717. Note that the first 3 decimals are identical.

The spelling of 1312130982 in words is "one billion, three hundred twelve million, one hundred thirty thousand, nine hundred eighty-two".

Divisors: 1 2 3 6 43 86 129 258 5085779 10171558 15257337 30514674 218688497 437376994 656065491 1312130982