20331201 has 16 divisors (see below), whose sum is σ = 31313088. Its totient is φ = 11596800.

The previous prime is 20331191. The next prime is 20331209. The reversal of 20331201 is 10213302.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-20331201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20331209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17560 + ... + 18681.

It is an arithmetic number, because the mean of its divisors is an integer number (1957068).

Almost surely, 2^20331201 is an apocalyptic number.

It is an amenable number.

20331201 is a deficient number, since it is larger than the sum of its proper divisors (10981887).

20331201 is a wasteful number, since it uses less digits than its factorization.

20331201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36272.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 20331201 is about 4509.0133067003. The cubic root of 20331201 is about 272.9319289822.

Adding to 20331201 its reverse (10213302), we get a palindrome (30544503).

The spelling of 20331201 in words is "twenty million, three hundred thirty-one thousand, two hundred one".