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23011310101 = 131770100777
BaseRepresentation
bin10101011011100101…
…001011101000010101
32012101200211200010111
4111123211023220111
5334111343410401
614323220123021
71443145623433
oct253345135025
965350750114
1023011310101
11983931495a
124562536471
13222951c130
1411841d3d53
158ea2e5e51
hex55b94ba15

23011310101 has 4 divisors (see below), whose sum is σ = 24781410892. Its totient is φ = 21241209312.

The previous prime is 23011310099. The next prime is 23011310129. The reversal of 23011310101 is 10101311032.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12039795076 + 10971515025 = 109726^2 + 104745^2 .

It is a cyclic number.

It is not a de Polignac number, because 23011310101 - 21 = 23011310099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 1770100777 = 23011310101 / (2 + 3 + 0 + 1 + 1 + 3 + 1 + 0 + 1 + 0 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23011310131) 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, 885050376 + ... + 885050401.

It is an arithmetic number, because the mean of its divisors is an integer number (6195352723).

Almost surely, 223011310101 is an apocalyptic number.

It is an amenable number.

23011310101 is a deficient number, since it is larger than the sum of its proper divisors (1770100791).

23011310101 is a wasteful number, since it uses less digits than its factorization.

23011310101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1770100790.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 23011310101 its reverse (10101311032), we get a palindrome (33112621133).

The spelling of 23011310101 in words is "twenty-three billion, eleven million, three hundred ten thousand, one hundred one".

Divisors: 1 13 1770100777 23011310101