123303514553430 has 128 divisors (see below), whose sum is σ = 306144963072000. Its totient is φ = 31750447841280.

The previous prime is 123303514553389. The next prime is 123303514553437. The reversal of 123303514553430 is 34355415303321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123303514553437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2762586394 + ... + 2762631026.

It is an arithmetic number, because the mean of its divisors is an integer number (2391757524000).

Almost surely, 2^{123303514553430} is an apocalyptic number.

123303514553430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 123303514553430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153072481536000).

123303514553430 is an abundant number, since it is smaller than the sum of its proper divisors (182841448518570).

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

123303514553430 is a wasteful number, since it uses less digits than its factorization.

123303514553430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51126.

The product of its (nonzero) digits is 972000, while the sum is 42.

Adding to 123303514553430 its reverse (34355415303321), we get a palindrome (157658929856751).

The spelling of 123303514553430 in words is "one hundred twenty-three trillion, three hundred three billion, five hundred fourteen million, five hundred fifty-three thousand, four hundred thirty".