640103030 has 32 divisors (see below), whose sum is σ = 1333463040. Its totient is φ = 216684000.

The previous prime is 640103021. The next prime is 640103033. The reversal of 640103030 is 30301046.

640103030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (640103033) 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, 52346 + ... + 63405.

It is an arithmetic number, because the mean of its divisors is an integer number (41670720).

Almost surely, 2^640103030 is an apocalyptic number.

640103030 is an abundant number, since it is smaller than the sum of its proper divisors (693360010).

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

640103030 is a wasteful number, since it uses less digits than its factorization.

640103030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115844.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 640103030 is about 25300.2575085709. The cubic root of 640103030 is about 861.8201175744.

Adding to 640103030 its reverse (30301046), we get a palindrome (670404076).

The spelling of 640103030 in words is "six hundred forty million, one hundred three thousand, thirty".