123103313421 has 16 divisors (see below), whose sum is σ = 188483543040. Its totient is φ = 70681327920.

The previous prime is 123103313419. The next prime is 123103313441. The reversal of 123103313421 is 124313301321.

It is not a de Polignac number, because 123103313421 - 2¹ = 123103313419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123103313391 and 123103313400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123103313441) 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, 98167885 + ... + 98169138.

It is an arithmetic number, because the mean of its divisors is an integer number (11780221440).

Almost surely, 2^123103313421 is an apocalyptic number.

123103313421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123103313421 is a deficient number, since it is larger than the sum of its proper divisors (65380229619).

123103313421 is a wasteful number, since it uses less digits than its factorization.

123103313421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196337056.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 123103313421 its reverse (124313301321), we get a palindrome (247416614742).

The spelling of 123103313421 in words is "one hundred twenty-three billion, one hundred three million, three hundred thirteen thousand, four hundred twenty-one".