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1312020710 = 2571113131071
BaseRepresentation
bin100111000110011…
…1101100011100110
310101102210120001122
41032030331203212
510141334130320
6334105053542
744340664160
oct11614754346
93342716048
101312020710
11613668640
123074872b2
1317ba86520
14c636d930
157a2b6d25
hex4e33d8e6

1312020710 has 64 divisors (see below), whose sum is σ = 3170893824. Its totient is φ = 377481600.

The previous prime is 1312020709. The next prime is 1312020769. The reversal of 1312020710 is 170202131.

It is a Curzon 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 31 ways as a sum of consecutive naturals, for example, 55526 + ... + 75545.

It is an arithmetic number, because the mean of its divisors is an integer number (49545216).

Almost surely, 21312020710 is an apocalyptic number.

1312020710 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1312020710 is an abundant number, since it is smaller than the sum of its proper divisors (1858873114).

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

1312020710 is a wasteful number, since it uses less digits than its factorization.

1312020710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131109.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 1312020710 is about 36221.8264310346. The cubic root of 1312020710 is about 1094.7464951125.

Adding to 1312020710 its reverse (170202131), we get a palindrome (1482222841).

The spelling of 1312020710 in words is "one billion, three hundred twelve million, twenty thousand, seven hundred ten".

Divisors: 1 2 5 7 10 11 13 14 22 26 35 55 65 70 77 91 110 130 143 154 182 286 385 455 715 770 910 1001 1430 2002 5005 10010 131071 262142 655355 917497 1310710 1441781 1703923 1834994 2883562 3407846 4587485 7208905 8519615 9174970 10092467 11927461 14417810 17039230 18743153 20184934 23854922 37486306 50462335 59637305 93715765 100924670 119274610 131202071 187431530 262404142 656010355 1312020710