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23012001013 = 34676637439
BaseRepresentation
bin10101011011100111…
…110100010011110101
32012101202010202212211
4111123213310103311
5334112033013023
614323243013421
71443154531651
oct253347642365
965352122784
1023012001013
119839746a61
12456280a271
132229701761
141184333a61
158ea3d0a0d
hex55b9f44f5

23012001013 has 4 divisors (see below), whose sum is σ = 23018641920. Its totient is φ = 23005360108.

The previous prime is 23012001007. The next prime is 23012001037. The reversal of 23012001013 is 31010021032.

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 23012001013 - 25 = 23012000981 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23012000984 and 23012001002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23012001053) 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, 3315253 + ... + 3322186.

It is an arithmetic number, because the mean of its divisors is an integer number (5754660480).

Almost surely, 223012001013 is an apocalyptic number.

It is an amenable number.

23012001013 is a deficient number, since it is larger than the sum of its proper divisors (6640907).

23012001013 is an equidigital number, since it uses as much as digits as its factorization.

23012001013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6640906.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 23012001013 its reverse (31010021032), we get a palindrome (54022022045).

The spelling of 23012001013 in words is "twenty-three billion, twelve million, one thousand, thirteen".

Divisors: 1 3467 6637439 23012001013