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1312131310103 = 19471469351971
BaseRepresentation
bin10011000110000001000…
…111101110001000010111
311122102211200112212011202
4103012001013232020113
5132444221103410403
62442441303423115
7163540560053405
oct23060107561027
94572750485152
101312131310103
11466520a10009
12192372154a9b
139696c515b43
14477167c8475
15241e8e82688
hex131811ee217

1312131310103 has 8 divisors (see below), whose sum is σ = 1410577893120. Its totient is φ = 1216623431160.

The previous prime is 1312131310093. The next prime is 1312131310111. The reversal of 1312131310103 is 3010131312131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1312131310103 - 28 = 1312131309847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312131310123) 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, 734675093 + ... + 734676878.

It is an arithmetic number, because the mean of its divisors is an integer number (176322236640).

Almost surely, 21312131310103 is an apocalyptic number.

1312131310103 is a deficient number, since it is larger than the sum of its proper divisors (98446583017).

1312131310103 is a wasteful number, since it uses less digits than its factorization.

1312131310103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1469352037.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 1312131310103 its reverse (3010131312131), we get a palindrome (4322262622234).

The spelling of 1312131310103 in words is "one trillion, three hundred twelve billion, one hundred thirty-one million, three hundred ten thousand, one hundred three".

Divisors: 1 19 47 893 1469351971 27917687449 69059542637 1312131310103