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13231304402 = 2557102111633
BaseRepresentation
bin11000101001010010…
…11010111011010010
31021011010000220110012
430110221122323102
5204044203220102
610024532434522
7645612142331
oct142451327322
937133026405
1013231304402
11567a7a9918
122693178a42
13132b299904
148d7379d18
155268e1752
hex314a5aed2

13231304402 has 16 divisors (see below), whose sum is σ = 19903772952. Its totient is φ = 6596739840.

The previous prime is 13231304399. The next prime is 13231304431. The reversal of 13231304402 is 20440313231.

13231304402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 10164470761 + 3066833641 = 100819^2 + 55379^2 .

It is an unprimeable number.

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, 1131578 + ... + 1143210.

Almost surely, 213231304402 is an apocalyptic number.

13231304402 is a deficient number, since it is larger than the sum of its proper divisors (6672468550).

13231304402 is a wasteful number, since it uses less digits than its factorization.

13231304402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13213.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 13231304402 its reverse (20440313231), we get a palindrome (33671617633).

The spelling of 13231304402 in words is "thirteen billion, two hundred thirty-one million, three hundred four thousand, four hundred two".

Divisors: 1 2 557 1021 1114 2042 11633 23266 568697 1137394 6479581 11877293 12959162 23754586 6615652201 13231304402