20003531010 has 32 divisors (see below), whose sum is σ = 48374960832. Its totient is φ = 5293554240.

The previous prime is 20003531003. The next prime is 20003531011. The reversal of 20003531010 is 1013530002.

It is a happy number.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20003531011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2541049 + ... + 2548908.

It is an arithmetic number, because the mean of its divisors is an integer number (1511717526).

Almost surely, 2^20003531010 is an apocalyptic number.

20003531010 is an abundant number, since it is smaller than the sum of its proper divisors (28371429822).

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

20003531010 is a wasteful number, since it uses less digits than its factorization.

20003531010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5090098.

The product of its (nonzero) digits is 90, while the sum is 15.

The spelling of 20003531010 in words is "twenty billion, three million, five hundred thirty-one thousand, ten".