723132233032021 has 4 divisors (see below), whose sum is σ = 733925251435552. Its totient is φ = 712339214628492.

The previous prime is 723132233031931. The next prime is 723132233032031. The reversal of 723132233032021 is 120230332231327.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 723132233032021 - 2⁷ = 723132233031893 is a prime.

It is a super-2 number, since 2×723132233032021² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (723132233032031) 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, 5396509201665 + ... + 5396509201798.

It is an arithmetic number, because the mean of its divisors is an integer number (183481312858888).

Almost surely, 2^{723132233032021} is an apocalyptic number.

It is an amenable number.

723132233032021 is a deficient number, since it is larger than the sum of its proper divisors (10793018403531).

723132233032021 is a wasteful number, since it uses less digits than its factorization.

723132233032021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10793018403530.

The product of its (nonzero) digits is 54432, while the sum is 34.

Adding to 723132233032021 its reverse (120230332231327), we get a palindrome (843362565263348).

The spelling of 723132233032021 in words is "seven hundred twenty-three trillion, one hundred thirty-two billion, two hundred thirty-three million, thirty-two thousand, twenty-one".