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123310113013 = 677182141969
BaseRepresentation
bin111001011010111011…
…0110000000011110101
3102210021200201202220201
41302311312300003311
54010014342104023
6132351535400501
711623511444443
oct1626566600365
9383250652821
10123310113013
114832838700a
121ba94383131
13b821bca819
145d7abd5b93
15331a8a4bad
hex1cb5db00f5

123310113013 has 4 divisors (see below), whose sum is σ = 123492255660. Its totient is φ = 123127970368.

The previous prime is 123310112987. The next prime is 123310113029. The reversal of 123310113013 is 310311013321.

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 64820141604 + 58489971409 = 254598^2 + 241847^2 .

It is a cyclic number.

It is not a de Polignac number, because 123310113013 - 213 = 123310104821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123310113713) 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, 91070308 + ... + 91071661.

It is an arithmetic number, because the mean of its divisors is an integer number (30873063915).

Almost surely, 2123310113013 is an apocalyptic number.

It is an amenable number.

123310113013 is a deficient number, since it is larger than the sum of its proper divisors (182142647).

123310113013 is an equidigital number, since it uses as much as digits as its factorization.

123310113013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182142646.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 123310113013 its reverse (310311013321), we get a palindrome (433621126334).

The spelling of 123310113013 in words is "one hundred twenty-three billion, three hundred ten million, one hundred thirteen thousand, thirteen".

Divisors: 1 677 182141969 123310113013