123312413421 has 16 divisors (see below), whose sum is σ = 182702873920. Its totient is φ = 82200258000.

The previous prime is 123312413387. The next prime is 123312413449. The reversal of 123312413421 is 124314213321.

123312413421 is a `hidden beast` number, since 1 + 2 + 3 + 312 + 4 + 1 + 342 + 1 = 666.

It is not a de Polignac number, because 123312413421 - 2¹⁰ = 123312412397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123312413921) 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, 66066 + ... + 500988.

It is an arithmetic number, because the mean of its divisors is an integer number (11418929620).

Almost surely, 2^123312413421 is an apocalyptic number.

It is an amenable number.

123312413421 is a deficient number, since it is larger than the sum of its proper divisors (59390460499).

123312413421 is a wasteful number, since it uses less digits than its factorization.

123312413421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445433 (or 445427 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

Adding to 123312413421 its reverse (124314213321), we get a palindrome (247626626742).

The spelling of 123312413421 in words is "one hundred twenty-three billion, three hundred twelve million, four hundred thirteen thousand, four hundred twenty-one".