21920600323 has 2 divisors, whose sum is σ = 21920600324. Its totient is φ = 21920600322.

The previous prime is 21920600291. The next prime is 21920600399. The reversal of 21920600323 is 32300602912.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21920600323 - 2⁵ = 21920600291 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21920600291 and 21920600300.

It is not a weakly prime, because it can be changed into another prime (21920603323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10960300161 + 10960300162.

It is an arithmetic number, because the mean of its divisors is an integer number (10960300162).

Almost surely, 2^21920600323 is an apocalyptic number.

21920600323 is a deficient number, since it is larger than the sum of its proper divisors (1).

21920600323 is an equidigital number, since it uses as much as digits as its factorization.

21920600323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 28.

The spelling of 21920600323 in words is "twenty-one billion, nine hundred twenty million, six hundred thousand, three hundred twenty-three".