123213630631444 has 12 divisors (see below), whose sum is σ = 215820411364404. Its totient is φ = 61550655955904.

The previous prime is 123213630631433. The next prime is 123213630631493. The reversal of 123213630631444 is 444136036312321.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 59188988259844 + 64024642371600 = 7693438^2 + 8001540^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 123213630631444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14039835019 + ... + 14039843794.

It is an arithmetic number, because the mean of its divisors is an integer number (17985034280367).

Almost surely, 2^{123213630631444} is an apocalyptic number.

It is an amenable number.

123213630631444 is a deficient number, since it is larger than the sum of its proper divisors (92606780732960).

123213630631444 is a wasteful number, since it uses less digits than its factorization.

123213630631444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28079679914 (or 28079679912 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 43.

Adding to 123213630631444 its reverse (444136036312321), we get a palindrome (567349666943765).

The spelling of 123213630631444 in words is "one hundred twenty-three trillion, two hundred thirteen billion, six hundred thirty million, six hundred thirty-one thousand, four hundred forty-four".