20331030 has 32 divisors (see below), whose sum is σ = 50479200. Its totient is φ = 5234432.

The previous prime is 20331023. The next prime is 20331043. The reversal of 20331030 is 3013302.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20330997 and 20331015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10815 + ... + 12554.

It is an arithmetic number, because the mean of its divisors is an integer number (1577475).

Almost surely, 2^20331030 is an apocalyptic number.

20331030 is an abundant number, since it is smaller than the sum of its proper divisors (30148170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20331030 is a wasteful number, since it uses less digits than its factorization.

20331030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23408.

The product of its (nonzero) digits is 54, while the sum is 12.

The square root of 20331030 is about 4508.9943446405. The cubic root of 20331030 is about 272.9311637956.

Adding to 20331030 its reverse (3013302), we get a palindrome (23344332).

The spelling of 20331030 in words is "twenty million, three hundred thirty-one thousand, thirty".