20329311 has 8 divisors (see below), whose sum is σ = 27148720. Its totient is φ = 13531392.

The previous prime is 20329303. The next prime is 20329321. The reversal of 20329311 is 11392302.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20329311 - 2³ = 20329303 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 (20329301) 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, 3016 + ... + 7053.

It is an arithmetic number, because the mean of its divisors is an integer number (3393590).

Almost surely, 2^20329311 is an apocalyptic number.

20329311 is a deficient number, since it is larger than the sum of its proper divisors (6819409).

20329311 is a wasteful number, since it uses less digits than its factorization.

20329311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10745.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 20329311 is about 4508.8037216095. The cubic root of 20329311 is about 272.9234714177.

The spelling of 20329311 in words is "twenty million, three hundred twenty-nine thousand, three hundred eleven".