403312213123 has 4 divisors (see below), whose sum is σ = 407012325280. Its totient is φ = 399612100968.

The previous prime is 403312213103. The next prime is 403312213207. The reversal of 403312213123 is 321312213304.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-403312213123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (403312213103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1850055915 + ... + 1850056132.

It is an arithmetic number, because the mean of its divisors is an integer number (101753081320).

Almost surely, 2^403312213123 is an apocalyptic number.

403312213123 is a deficient number, since it is larger than the sum of its proper divisors (3700112157).

403312213123 is a wasteful number, since it uses less digits than its factorization.

403312213123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3700112156.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 403312213123 its reverse (321312213304), we get a palindrome (724624426427).

The spelling of 403312213123 in words is "four hundred three billion, three hundred twelve million, two hundred thirteen thousand, one hundred twenty-three".