201031004394 has 24 divisors (see below), whose sum is σ = 475164192672. Its totient is φ = 60918486120.

The previous prime is 201031004359. The next prime is 201031004453. The reversal of 201031004394 is 493400130102.

201031004394 is a `hidden beast` number, since 20 + 103 + 100 + 439 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 507653854 + ... + 507654249.

It is an arithmetic number, because the mean of its divisors is an integer number (19798508028).

Almost surely, 2^201031004394 is an apocalyptic number.

201031004394 is an abundant number, since it is smaller than the sum of its proper divisors (274133188278).

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

201031004394 is a wasteful number, since it uses less digits than its factorization.

201031004394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015308122 (or 1015308119 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 201031004394 its reverse (493400130102), we get a palindrome (694431134496).

The spelling of 201031004394 in words is "two hundred one billion, thirty-one million, four thousand, three hundred ninety-four".