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1312310130 = 235105141621
BaseRepresentation
bin100111000111000…
…0100001101110010
310101110100021001220
41032032010031302
510141422411010
6334115205510
744343311025
oct11616041562
93343307056
101312310130
1161384602a
123075a6896
1317bb58191
14c64071bc
157a322970
hex4e384372

1312310130 has 32 divisors (see below), whose sum is σ = 3152616768. Its totient is φ = 349608000.

The previous prime is 1312310119. The next prime is 1312310137. The reversal of 1312310130 is 310132131.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (1312310137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10720 + ... + 52340.

It is an arithmetic number, because the mean of its divisors is an integer number (98519274).

Almost surely, 21312310130 is an apocalyptic number.

1312310130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1312310130 is an abundant number, since it is smaller than the sum of its proper divisors (1840306638).

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

1312310130 is a wasteful number, since it uses less digits than its factorization.

1312310130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42682.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 1312310130 is about 36225.8213157411. The cubic root of 1312310130 is about 1094.8269862799.

Adding to 1312310130 its reverse (310132131), we get a palindrome (1622442261).

The spelling of 1312310130 in words is "one billion, three hundred twelve million, three hundred ten thousand, one hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 1051 2102 3153 5255 6306 10510 15765 31530 41621 83242 124863 208105 249726 416210 624315 1248630 43743671 87487342 131231013 218718355 262462026 437436710 656155065 1312310130