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13103031003 = 321120699891
BaseRepresentation
bin11000011010000000…
…00110001011011011
31020211011122221102120
430031000012023123
5203313333443003
610004111232323
7642463632366
oct141500061333
936734587376
1013103031003
115614357147
1226582186a3
13130a836caa
148c43090dd
1551a504853
hex30d0062db

13103031003 has 8 divisors (see below), whose sum is σ = 17553508416. Its totient is φ = 8693953800.

The previous prime is 13103030951. The next prime is 13103031059. The reversal of 13103031003 is 30013030131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13103031003 - 29 = 13103030491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13103031083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10349313 + ... + 10350578.

It is an arithmetic number, because the mean of its divisors is an integer number (2194188552).

Almost surely, 213103031003 is an apocalyptic number.

13103031003 is a deficient number, since it is larger than the sum of its proper divisors (4450477413).

13103031003 is a wasteful number, since it uses less digits than its factorization.

13103031003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20700105.

The product of its (nonzero) digits is 81, while the sum is 15.

Adding to 13103031003 its reverse (30013030131), we get a palindrome (43116061134).

The spelling of 13103031003 in words is "thirteen billion, one hundred three million, thirty-one thousand, three".

Divisors: 1 3 211 633 20699891 62099673 4367677001 13103031003