20453311 has 2 divisors, whose sum is σ = 20453312. Its totient is φ = 20453310.

The previous prime is 20453299. The next prime is 20453327. The reversal of 20453311 is 11335402.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20453311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20451311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10226655 + 10226656.

It is an arithmetic number, because the mean of its divisors is an integer number (10226656).

Almost surely, 2^20453311 is an apocalyptic number.

20453311 is a deficient number, since it is larger than the sum of its proper divisors (1).

20453311 is an equidigital number, since it uses as much as digits as its factorization.

20453311 is an odious number, because the sum of its binary digits is odd.

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

The square root of 20453311 is about 4522.5336925224. The cubic root of 20453311 is about 273.4772520231.

Adding to 20453311 its reverse (11335402), we get a palindrome (31788713).

It can be divided in two parts, 2045 and 3311, that added together give a triangular number (5356 = T₁₀₃).

The spelling of 20453311 in words is "twenty million, four hundred fifty-three thousand, three hundred eleven".