105354203123 has 8 divisors (see below), whose sum is σ = 114559911648. Its totient is φ = 96305857344.

The previous prime is 105354203117. The next prime is 105354203137. The reversal of 105354203123 is 321302453501.

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-105354203123 is a prime.

It is a super-2 number, since 2×105354203123² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105354203183) 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, 39339290 + ... + 39341967.

It is an arithmetic number, because the mean of its divisors is an integer number (14319988956).

Almost surely, 2^105354203123 is an apocalyptic number.

105354203123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

105354203123 is a deficient number, since it is larger than the sum of its proper divisors (9205708525).

105354203123 is a wasteful number, since it uses less digits than its factorization.

105354203123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78681373.

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 105354203123 its reverse (321302453501), we get a palindrome (426656656624).

The spelling of 105354203123 in words is "one hundred five billion, three hundred fifty-four million, two hundred three thousand, one hundred twenty-three".