123211440134 has 24 divisors (see below), whose sum is σ = 186378347064. Its totient is φ = 61089134400.

The previous prime is 123211440097. The next prime is 123211440199. The reversal of 123211440134 is 431044112321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24585689 + ... + 24590699.

It is an arithmetic number, because the mean of its divisors is an integer number (7765764461).

Almost surely, 2^123211440134 is an apocalyptic number.

123211440134 is a deficient number, since it is larger than the sum of its proper divisors (63166906930).

123211440134 is an equidigital number, since it uses as much as digits as its factorization.

123211440134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5732 (or 5541 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 123211440134 its reverse (431044112321), we get a palindrome (554255552455).

The spelling of 123211440134 in words is "one hundred twenty-three billion, two hundred eleven million, four hundred forty thousand, one hundred thirty-four".