55131340123 has 8 divisors (see below), whose sum is σ = 55217786400. Its totient is φ = 55044963840.

The previous prime is 55131340111. The next prime is 55131340129. The reversal of 55131340123 is 32104313155.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55131340123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55131340091 and 55131340100.

It is not an unprimeable number, because it can be changed into a prime (55131340129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1686393 + ... + 1718773.

It is an arithmetic number, because the mean of its divisors is an integer number (6902223300).

Almost surely, 2^55131340123 is an apocalyptic number.

55131340123 is a deficient number, since it is larger than the sum of its proper divisors (86446277).

55131340123 is a wasteful number, since it uses less digits than its factorization.

55131340123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34997.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 55131340123 its reverse (32104313155), we get a palindrome (87235653278).

The spelling of 55131340123 in words is "fifty-five billion, one hundred thirty-one million, three hundred forty thousand, one hundred twenty-three".