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1312104423 = 37443141041
BaseRepresentation
bin100111000110101…
…0001111111100111
310101102221210220010
41032031101333213
510141344320143
6334110541303
744341463220
oct11615217747
93342853803
101312104423
11613715523
12307507833
1317bab5666
14c6392247
157a2d1a33
hex4e351fe7

1312104423 has 16 divisors (see below), whose sum is σ = 2003924736. Its totient is φ = 748076160.

The previous prime is 1312104407. The next prime is 1312104439. The reversal of 1312104423 is 3244012131.

It is an interprime number because it is at equal distance from previous prime (1312104407) and next prime (1312104439).

It is not a de Polignac number, because 1312104423 - 24 = 1312104407 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1312104423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312104463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61218 + ... + 79823.

It is an arithmetic number, because the mean of its divisors is an integer number (125245296).

Almost surely, 21312104423 is an apocalyptic number.

1312104423 is a deficient number, since it is larger than the sum of its proper divisors (691820313).

1312104423 is a wasteful number, since it uses less digits than its factorization.

1312104423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141494.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1312104423 is about 36222.9819727752. The cubic root of 1312104423 is about 1094.7697779168.

Adding to 1312104423 its reverse (3244012131), we get a palindrome (4556116554).

The spelling of 1312104423 in words is "one billion, three hundred twelve million, one hundred four thousand, four hundred twenty-three".

Divisors: 1 3 7 21 443 1329 3101 9303 141041 423123 987287 2961861 62481163 187443489 437368141 1312104423