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1311413213 = 11839142097
BaseRepresentation
bin100111000101010…
…1001001111011101
310101101122200201202
41032022221033131
510141210210323
6334044045245
744332554065
oct11612511735
93341580652
101311413213
11613293180
12307233825
1317b902b66
14c62523a5
157a1e6d28
hex4e2a93dd

1311413213 has 8 divisors (see below), whose sum is σ = 1432347840. Its totient is φ = 1190764480.

The previous prime is 1311413203. The next prime is 1311413221. The reversal of 1311413213 is 3123141131.

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 1311413213 - 28 = 1311412957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311413203) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 61820 + ... + 80277.

It is an arithmetic number, because the mean of its divisors is an integer number (179043480).

Almost surely, 21311413213 is an apocalyptic number.

It is an amenable number.

1311413213 is a deficient number, since it is larger than the sum of its proper divisors (120934627).

1311413213 is a wasteful number, since it uses less digits than its factorization.

1311413213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142947.

The product of its digits is 216, while the sum is 20.

The square root of 1311413213 is about 36213.4396736902. The cubic root of 1311413213 is about 1094.5775044153.

Adding to 1311413213 its reverse (3123141131), we get a palindrome (4434554344).

The spelling of 1311413213 in words is "one billion, three hundred eleven million, four hundred thirteen thousand, two hundred thirteen".

Divisors: 1 11 839 9229 142097 1563067 119219383 1311413213