203201031090 has 32 divisors (see below), whose sum is σ = 513349974720. Its totient is φ = 51334997184.

The previous prime is 203201031073. The next prime is 203201031119. The reversal of 203201031090 is 90130102302.

It is a happy number.

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, 178245949 + ... + 178247088.

It is an arithmetic number, because the mean of its divisors is an integer number (16042186710).

Almost surely, 2^203201031090 is an apocalyptic number.

203201031090 is an abundant number, since it is smaller than the sum of its proper divisors (310148943630).

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

203201031090 is a wasteful number, since it uses less digits than its factorization.

203201031090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356493066.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 203201031090 its reverse (90130102302), we get a palindrome (293331133392).

The spelling of 203201031090 in words is "two hundred three billion, two hundred one million, thirty-one thousand, ninety".