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20123413001 = 27077433843
BaseRepresentation
bin10010101111011100…
…101110101000001001
31220221102202022001122
4102233130232220021
5312203043204001
613124454325025
71311451121366
oct225734565011
956842668048
1020123413001
11859716203a
123a97359775
131b89128193
14d8c84d46d
157cb9e7b1b
hex4af72ea09

20123413001 has 4 divisors (see below), whose sum is σ = 20130849552. Its totient is φ = 20115976452.

The previous prime is 20123412973. The next prime is 20123413003. The reversal of 20123413001 is 10031432102.

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.

It is a cyclic number.

It is not a de Polignac number, because 20123413001 - 210 = 20123411977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20123413003) 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, 3714215 + ... + 3719628.

It is an arithmetic number, because the mean of its divisors is an integer number (5032712388).

Almost surely, 220123413001 is an apocalyptic number.

It is an amenable number.

20123413001 is a deficient number, since it is larger than the sum of its proper divisors (7436551).

20123413001 is an equidigital number, since it uses as much as digits as its factorization.

20123413001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7436550.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20123413001 its reverse (10031432102), we get a palindrome (30154845103).

The spelling of 20123413001 in words is "twenty billion, one hundred twenty-three million, four hundred thirteen thousand, one".

Divisors: 1 2707 7433843 20123413001