20113030 has 24 divisors (see below), whose sum is σ = 42115248. Its totient is φ = 6895728.

The previous prime is 20113019. The next prime is 20113031. The reversal of 20113030 is 3031102.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 20112998 and 20113016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20113031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20034 + ... + 21013.

It is an arithmetic number, because the mean of its divisors is an integer number (1754802).

Almost surely, 2^20113030 is an apocalyptic number.

20113030 is an abundant number, since it is smaller than the sum of its proper divisors (22002218).

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

20113030 is a wasteful number, since it uses less digits than its factorization.

20113030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41068 (or 41061 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 20113030 is about 4484.7552887532. The cubic root of 20113030 is about 271.9521524112.

Adding to 20113030 its reverse (3031102), we get a palindrome (23144132).

It can be divided in two parts, 2011 and 3030, that added together give a square (5041 = 71²).

The spelling of 20113030 in words is "twenty million, one hundred thirteen thousand, thirty".