20310102 has 20 divisors (see below), whose sum is σ = 45510036. Its totient is φ = 6769980.

The previous prime is 20310091. The next prime is 20310119. The reversal of 20310102 is 20101302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 62524 + ... + 62847.

Almost surely, 2^20310102 is an apocalyptic number.

20310102 is an abundant number, since it is smaller than the sum of its proper divisors (25199934).

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

20310102 is a wasteful number, since it uses less digits than its factorization.

20310102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125385 (or 125376 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 20310102 is about 4506.6730522637. The cubic root of 20310102 is about 272.8374832755.

Adding to 20310102 its reverse (20101302), we get a palindrome (40411404).

The spelling of 20310102 in words is "twenty million, three hundred ten thousand, one hundred two".