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13103131332 = 2231091927611
BaseRepresentation
bin11000011010000000…
…11110101011000100
31020211011212001001110
430031000132223010
5203313400200312
610004113325020
7642464531034
oct141500365304
936734761043
1013103131332
115614415565
122658266770
13130a870865
148c43338c4
1551a52443c
hex30d01eac4

13103131332 has 12 divisors (see below), whose sum is σ = 30573973136. Its totient is φ = 4367710440.

The previous prime is 13103131313. The next prime is 13103131333. The reversal of 13103131332 is 23313130131.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 13103131299 and 13103131308.

It is not an unprimeable number, because it can be changed into a prime (13103131333) 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, 545963794 + ... + 545963817.

Almost surely, 213103131332 is an apocalyptic number.

13103131332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13103131332 is an abundant number, since it is smaller than the sum of its proper divisors (17470841804).

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

13103131332 is a wasteful number, since it uses less digits than its factorization.

13103131332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091927618 (or 1091927616 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 13103131332 its reverse (23313130131), we get a palindrome (36416261463).

The spelling of 13103131332 in words is "thirteen billion, one hundred three million, one hundred thirty-one thousand, three hundred thirty-two".

Divisors: 1 2 3 4 6 12 1091927611 2183855222 3275782833 4367710444 6551565666 13103131332