20310102012 has 48 divisors (see below), whose sum is σ = 49469007392. Its totient is φ = 6479066880.

The previous prime is 20310101969. The next prime is 20310102013. The reversal of 20310102012 is 21020101302.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20310102013) 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, 347863 + ... + 402030.

Almost surely, 2^20310102012 is an apocalyptic number.

It is an amenable number.

20310102012 is an abundant number, since it is smaller than the sum of its proper divisors (29158905380).

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

20310102012 is a wasteful number, since it uses less digits than its factorization.

20310102012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749998 (or 749996 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20310102012 its reverse (21020101302), we get a palindrome (41330203314).

The spelling of 20310102012 in words is "twenty billion, three hundred ten million, one hundred two thousand, twelve".