2001231103134 has 16 divisors (see below), whose sum is σ = 4008517376400. Its totient is φ = 666067839360.

The previous prime is 2001231103129. The next prime is 2001231103141. The reversal of 2001231103134 is 4313011321002.

It is a self number, because there is not a number n which added to its sum of digits gives 2001231103134.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 252294459 + ... + 252302390.

It is an arithmetic number, because the mean of its divisors is an integer number (250532336025).

Almost surely, 2^{2001231103134} is an apocalyptic number.

2001231103134 is an abundant number, since it is smaller than the sum of its proper divisors (2007286273266).

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

2001231103134 is a wasteful number, since it uses less digits than its factorization.

2001231103134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504597515.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 2001231103134 its reverse (4313011321002), we get a palindrome (6314242424136).

The spelling of 2001231103134 in words is "two trillion, one billion, two hundred thirty-one million, one hundred three thousand, one hundred thirty-four".