20354311 has 2 divisors, whose sum is σ = 20354312. Its totient is φ = 20354310.

The previous prime is 20354303. The next prime is 20354357. The reversal of 20354311 is 11345302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20354311 - 2³ = 20354303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20354381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10177155 + 10177156.

It is an arithmetic number, because the mean of its divisors is an integer number (10177156).

Almost surely, 2^20354311 is an apocalyptic number.

20354311 is a deficient number, since it is larger than the sum of its proper divisors (1).

20354311 is an equidigital number, since it uses as much as digits as its factorization.

20354311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 20354311 is about 4511.5752237993. The cubic root of 20354311 is about 273.0353016021.

Adding to 20354311 its reverse (11345302), we get a palindrome (31699613).

Subtracting from 20354311 its reverse (11345302), we obtain a palindrome (9009009).

The spelling of 20354311 in words is "twenty million, three hundred fifty-four thousand, three hundred eleven".