123144203247 has 16 divisors (see below), whose sum is σ = 176828896608. Its totient is φ = 75778283520.

The previous prime is 123144203213. The next prime is 123144203251. The reversal of 123144203247 is 742302441321.

It is a happy number.

It is not a de Polignac number, because 123144203247 - 2⁶ = 123144203183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123144201247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1718047 + ... + 1788287.

It is an arithmetic number, because the mean of its divisors is an integer number (11051806038).

Almost surely, 2^123144203247 is an apocalyptic number.

123144203247 is a deficient number, since it is larger than the sum of its proper divisors (53684693361).

123144203247 is a wasteful number, since it uses less digits than its factorization.

123144203247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115210.

The product of its (nonzero) digits is 32256, while the sum is 33.

Adding to 123144203247 its reverse (742302441321), we get a palindrome (865446644568).

The spelling of 123144203247 in words is "one hundred twenty-three billion, one hundred forty-four million, two hundred three thousand, two hundred forty-seven".