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13031223001 = 40273235963
BaseRepresentation
bin11000010001011100…
…01010111011011001
31020122011112201100221
430020232022323121
5203141443114001
65553024200041
7640632365536
oct141056127331
936564481327
1013031223001
115587870795
122638169021
1312c89b4554
148b8975d8d
1551406d1a1
hex308b8aed9

13031223001 has 4 divisors (see below), whose sum is σ = 13034462992. Its totient is φ = 13027983012.

The previous prime is 13031222977. The next prime is 13031223013. The reversal of 13031223001 is 10032213031.

13031223001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10032213031 = 59170037509.

It is a cyclic number.

It is not a de Polignac number, because 13031223001 - 217 = 13031091929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13031223041) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1613955 + ... + 1622008.

It is an arithmetic number, because the mean of its divisors is an integer number (3258615748).

Almost surely, 213031223001 is an apocalyptic number.

It is an amenable number.

13031223001 is a deficient number, since it is larger than the sum of its proper divisors (3239991).

13031223001 is an equidigital number, since it uses as much as digits as its factorization.

13031223001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3239990.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 13031223001 its reverse (10032213031), we get a palindrome (23063436032).

The spelling of 13031223001 in words is "thirteen billion, thirty-one million, two hundred twenty-three thousand, one".

Divisors: 1 4027 3235963 13031223001