21320232343309 has 8 divisors (see below), whose sum is σ = 21363860927520. Its totient is φ = 21276604599600.

The previous prime is 21320232343273. The next prime is 21320232343373. The reversal of 21320232343309 is 90334323202312.

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 21320232343309 - 2¹³ = 21320232335117 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 (21320232344309) 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, 90633574 + ... + 90868504.

It is an arithmetic number, because the mean of its divisors is an integer number (2670482615940).

Almost surely, 2^{21320232343309} is an apocalyptic number.

It is an amenable number.

21320232343309 is a deficient number, since it is larger than the sum of its proper divisors (43628584211).

21320232343309 is a wasteful number, since it uses less digits than its factorization.

21320232343309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420251.

The product of its (nonzero) digits is 139968, while the sum is 37.

The spelling of 21320232343309 in words is "twenty-one trillion, three hundred twenty billion, two hundred thirty-two million, three hundred forty-three thousand, three hundred nine".