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1213030302 = 231118379247
BaseRepresentation
bin100100001001101…
…0101111110011110
310010112112022202020
41020103111332132
54441013432202
6320211241010
742026405331
oct11023257636
93115468666
101213030302
115727a6690
1229a2a9166
13164407413
14b7162618
15717615bc
hex484d5f9e

1213030302 has 16 divisors (see below), whose sum is σ = 2646611712. Its totient is φ = 367584920.

The previous prime is 1213030289. The next prime is 1213030303. The reversal of 1213030302 is 2030303121.

It is a super-2 number, since 2×12130303022 = 2942885027140422408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213030303) 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, 9189558 + ... + 9189689.

It is an arithmetic number, because the mean of its divisors is an integer number (165413232).

Almost surely, 21213030302 is an apocalyptic number.

1213030302 is an abundant number, since it is smaller than the sum of its proper divisors (1433581410).

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

1213030302 is a wasteful number, since it uses less digits than its factorization.

1213030302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18379263.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 1213030302 is about 34828.5845534957. The cubic root of 1213030302 is about 1066.4910534893.

Adding to 1213030302 its reverse (2030303121), we get a palindrome (3243333423).

The spelling of 1213030302 in words is "one billion, two hundred thirteen million, thirty thousand, three hundred two".

Divisors: 1 2 3 6 11 22 33 66 18379247 36758494 55137741 110275482 202171717 404343434 606515151 1213030302