20103012 has 48 divisors (see below), whose sum is σ = 54391680. Its totient is φ = 6408864.

The previous prime is 20102983. The next prime is 20103047. The reversal of 20103012 is 21030102.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 20102985 and 20103003.

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, 1563 + ... + 6530.

It is an arithmetic number, because the mean of its divisors is an integer number (1133160).

Almost surely, 2^20103012 is an apocalyptic number.

It is an amenable number.

20103012 is an abundant number, since it is smaller than the sum of its proper divisors (34288668).

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

20103012 is a wasteful number, since it uses less digits than its factorization.

20103012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8129 (or 8121 counting only the distinct ones).

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

The square root of 20103012 is about 4483.6382548105. The cubic root of 20103012 is about 271.9069931435.

Adding to 20103012 its reverse (21030102), we get a palindrome (41133114).

The spelling of 20103012 in words is "twenty million, one hundred three thousand, twelve".