123031213551044 has 24 divisors (see below), whose sum is σ = 221125406250840. Its totient is φ = 59852552196096.

The previous prime is 123031213550957. The next prime is 123031213551083. The reversal of 123031213551044 is 440155312130321.

It can be written as a sum of positive squares in 4 ways, for example, as 26540631097600 + 96490582453444 = 5151760^2 + 9822962^2 .

It is a junction number, because it is equal to n+sod(n) for n = 123031213550995 and 123031213551013.

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, 16000772 + ... + 22407300.

It is an arithmetic number, because the mean of its divisors is an integer number (9213558593785).

Almost surely, 2^{123031213551044} is an apocalyptic number.

It is an amenable number.

123031213551044 is a deficient number, since it is larger than the sum of its proper divisors (98094192699796).

123031213551044 is a wasteful number, since it uses less digits than its factorization.

123031213551044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6536327 (or 6536325 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

Adding to 123031213551044 its reverse (440155312130321), we get a palindrome (563186525681365).

The spelling of 123031213551044 in words is "one hundred twenty-three trillion, thirty-one billion, two hundred thirteen million, five hundred fifty-one thousand, forty-four".