20100342030 has 64 divisors (see below), whose sum is σ = 49887664128. Its totient is φ = 5177738880.

The previous prime is 20100342007. The next prime is 20100342043. The reversal of 20100342030 is 3024300102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 498609 + ... + 537411.

It is an arithmetic number, because the mean of its divisors is an integer number (779494752).

Almost surely, 2^20100342030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20100342030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24943832064).

20100342030 is an abundant number, since it is smaller than the sum of its proper divisors (29787322098).

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

20100342030 is a wasteful number, since it uses less digits than its factorization.

20100342030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39401.

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 20100342030 its reverse (3024300102), we get a palindrome (23124642132).

The spelling of 20100342030 in words is "twenty billion, one hundred million, three hundred forty-two thousand, thirty".