123031213551103 has 16 divisors (see below), whose sum is σ = 144546363964800. Its totient is φ = 103238549981280.

The previous prime is 123031213551083. The next prime is 123031213551119. The reversal of 123031213551103 is 301155312130321.

It is a cyclic number.

It is not a de Polignac number, because 123031213551103 - 2⁹ = 123031213550591 is a prime.

It is a super-2 number, since 2×123031213551103² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123031213551173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15094293 + ... + 21769246.

It is an arithmetic number, because the mean of its divisors is an integer number (9034147747800).

Almost surely, 2^{123031213551103} is an apocalyptic number.

123031213551103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

123031213551103 is a deficient number, since it is larger than the sum of its proper divisors (21515150413697).

123031213551103 is a wasteful number, since it uses less digits than its factorization.

123031213551103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36886902.

The product of its (nonzero) digits is 8100, while the sum is 31.

Adding to 123031213551103 its reverse (301155312130321), we get a palindrome (424186525681424).

The spelling of 123031213551103 in words is "one hundred twenty-three trillion, thirty-one billion, two hundred thirteen million, five hundred fifty-one thousand, one hundred three".