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13031213032 = 235330733993
BaseRepresentation
bin11000010001011100…
…01000011111101000
31020122011112012200201
430020232020133220
5203141442304112
65553024041544
7640632324505
oct141056103750
936564465621
1013031213032
115587864252
1226381632b4
1312c89acb56
148b89724ac
1551406a257
hex308b887e8

13031213032 has 16 divisors (see below), whose sum is σ = 24894535140. Its totient is φ = 6392670336.

The previous prime is 13031213029. The next prime is 13031213033. The reversal of 13031213032 is 23031213031.

It can be written as a sum of positive squares in 2 ways, for example, as 12605451076 + 425761956 = 112274^2 + 20634^2 .

It is not an unprimeable number, because it can be changed into a prime (13031213033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15366573 + ... + 15367420.

Almost surely, 213031213032 is an apocalyptic number.

It is an amenable number.

13031213032 is a deficient number, since it is larger than the sum of its proper divisors (11863322108).

13031213032 is a wasteful number, since it uses less digits than its factorization.

13031213032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30734052 (or 30734048 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 13031213032 its reverse (23031213031), we get a palindrome (36062426063).

Subtracting 13031213032 from its reverse (23031213031), we obtain a palindrome (9999999999).

The spelling of 13031213032 in words is "thirteen billion, thirty-one million, two hundred thirteen thousand, thirty-two".

Divisors: 1 2 4 8 53 106 212 424 30733993 61467986 122935972 245871944 1628901629 3257803258 6515606516 13031213032