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12303031003 = 62711961893
BaseRepresentation
bin10110111010101000…
…10101101011011011
31011202102022201201221
423131110111223123
5200144033443003
65352452352511
7613611016024
oct133524255333
934672281657
1012303031003
11524381631a
122474315737
131210b84103
14849d7dc4b
154c017c7bd
hex2dd515adb

12303031003 has 4 divisors (see below), whose sum is σ = 12304999168. Its totient is φ = 12301062840.

The previous prime is 12303031001. The next prime is 12303031049. The reversal of 12303031003 is 30013030321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12303031003 - 21 = 12303031001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12303031001) 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, 974676 + ... + 987217.

It is an arithmetic number, because the mean of its divisors is an integer number (3076249792).

Almost surely, 212303031003 is an apocalyptic number.

12303031003 is a deficient number, since it is larger than the sum of its proper divisors (1968165).

12303031003 is an equidigital number, since it uses as much as digits as its factorization.

12303031003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1968164.

The product of its (nonzero) digits is 162, while the sum is 16.

Adding to 12303031003 its reverse (30013030321), we get a palindrome (42316061324).

The spelling of 12303031003 in words is "twelve billion, three hundred three million, thirty-one thousand, three".

Divisors: 1 6271 1961893 12303031003