321213202413403 has 4 divisors (see below), whose sum is σ = 321223607458768. Its totient is φ = 321202797368040.

The previous prime is 321213202413359. The next prime is 321213202413461. The reversal of 321213202413403 is 304314202312123.

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

It is a cyclic number.

It is not a de Polignac number, because 321213202413403 - 2⁹ = 321213202412891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321213202413503) 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, 5202476376 + ... + 5202538117.

It is an arithmetic number, because the mean of its divisors is an integer number (80305901864692).

Almost surely, 2^{321213202413403} is an apocalyptic number.

321213202413403 is a deficient number, since it is larger than the sum of its proper divisors (10405045365).

321213202413403 is a wasteful number, since it uses less digits than its factorization.

321213202413403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10405045364.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 321213202413403 its reverse (304314202312123), we get a palindrome (625527404725526).

The spelling of 321213202413403 in words is "three hundred twenty-one trillion, two hundred thirteen billion, two hundred two million, four hundred thirteen thousand, four hundred three".