201340231040 has 128 divisors (see below), whose sum is σ = 521253986400. Its totient is φ = 73925148672.

The previous prime is 201340230953. The next prime is 201340231049. The reversal of 201340231040 is 40132043102.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201340231049) 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, 1421684 + ... + 1556876.

Almost surely, 2^201340231040 is an apocalyptic number.

201340231040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201340231040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260626993200).

201340231040 is an abundant number, since it is smaller than the sum of its proper divisors (319913755360).

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

201340231040 is a wasteful number, since it uses less digits than its factorization.

201340231040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135404 (or 135392 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 201340231040 its reverse (40132043102), we get a palindrome (241472274142).

The spelling of 201340231040 in words is "two hundred one billion, three hundred forty million, two hundred thirty-one thousand, forty".