403123121312 has 24 divisors (see below), whose sum is σ = 793994907636. Its totient is φ = 201473620992.

The previous prime is 403123121293. The next prime is 403123121321. The reversal of 403123121312 is 213121321304.

It can be written as a sum of positive squares in 2 ways, for example, as 391380364816 + 11742756496 = 625604^2 + 108364^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2673593 + ... + 2820344.

Almost surely, 2^403123121312 is an apocalyptic number.

It is an amenable number.

403123121312 is a deficient number, since it is larger than the sum of its proper divisors (390871786324).

403123121312 is a wasteful number, since it uses less digits than its factorization.

403123121312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5496240 (or 5496232 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 403123121312 its reverse (213121321304), we get a palindrome (616244442616).

The spelling of 403123121312 in words is "four hundred three billion, one hundred twenty-three million, one hundred twenty-one thousand, three hundred twelve".