123504103311 has 4 divisors (see below), whose sum is σ = 164672137752. Its totient is φ = 82336068872.

The previous prime is 123504103309. The next prime is 123504103321. The reversal of 123504103311 is 113301405321.

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

It is a cyclic number.

It is not a de Polignac number, because 123504103311 - 2¹ = 123504103309 is a prime.

It is a super-2 number, since 2×123504103311² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123504103321) 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, 20584017216 + ... + 20584017221.

It is an arithmetic number, because the mean of its divisors is an integer number (41168034438).

Almost surely, 2^123504103311 is an apocalyptic number.

123504103311 is a deficient number, since it is larger than the sum of its proper divisors (41168034441).

123504103311 is an equidigital number, since it uses as much as digits as its factorization.

123504103311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41168034440.

The product of its (nonzero) digits is 1080, while the sum is 24.

Adding to 123504103311 its reverse (113301405321), we get a palindrome (236805508632).

The spelling of 123504103311 in words is "one hundred twenty-three billion, five hundred four million, one hundred three thousand, three hundred eleven".