721023313103 has 8 divisors (see below), whose sum is σ = 726957153120. Its totient is φ = 715106452320.

The previous prime is 721023313079. The next prime is 721023313111. The reversal of 721023313103 is 301313320127.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 721023313103 - 2⁶ = 721023313039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (721023313163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4159523 + ... + 4329396.

It is an arithmetic number, because the mean of its divisors is an integer number (90869644140).

Almost surely, 2^721023313103 is an apocalyptic number.

721023313103 is a deficient number, since it is larger than the sum of its proper divisors (5933840017).

721023313103 is a wasteful number, since it uses less digits than its factorization.

721023313103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8489617.

The product of its (nonzero) digits is 2268, while the sum is 26.

The spelling of 721023313103 in words is "seven hundred twenty-one billion, twenty-three million, three hundred thirteen thousand, one hundred three".