123123231144 has 32 divisors (see below), whose sum is σ = 342008976000. Its totient is φ = 41041076976.

The previous prime is 123123231131. The next prime is 123123231173. The reversal of 123123231144 is 441132321321.

123123231144 is a `hidden beast` number, since 1 + 2 + 312 + 32 + 311 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285007264 + ... + 285007695.

It is an arithmetic number, because the mean of its divisors is an integer number (10687780500).

Almost surely, 2^123123231144 is an apocalyptic number.

It is an amenable number.

123123231144 is an abundant number, since it is smaller than the sum of its proper divisors (218885744856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123123231144 is a wasteful number, since it uses less digits than its factorization.

123123231144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570014974 (or 570014964 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

Adding to 123123231144 its reverse (441132321321), we get a palindrome (564255552465).

The spelling of 123123231144 in words is "one hundred twenty-three billion, one hundred twenty-three million, two hundred thirty-one thousand, one hundred forty-four".