20331349 has 8 divisors (see below), whose sum is σ = 22140000. Its totient is φ = 18596592.

The previous prime is 20331329. The next prime is 20331373. The reversal of 20331349 is 94313302.

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 20331349 - 2⁵ = 20331317 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 (20331329) 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, 17899 + ... + 19000.

It is an arithmetic number, because the mean of its divisors is an integer number (2767500).

Almost surely, 2^20331349 is an apocalyptic number.

20331349 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

20331349 is a deficient number, since it is larger than the sum of its proper divisors (1808651).

20331349 is a wasteful number, since it uses less digits than its factorization.

20331349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36947.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 20331349 is about 4509.0297182432. The cubic root of 20331349 is about 272.9325912456.

The spelling of 20331349 in words is "twenty million, three hundred thirty-one thousand, three hundred forty-nine".