201281204340 has 120 divisors (see below), whose sum is σ = 640320291072. Its totient is φ = 52918971840.

The previous prime is 201281204339. The next prime is 201281204351. The reversal of 201281204340 is 43402182102.

201281204340 is a `hidden beast` number, since 20 + 1 + 281 + 20 + 4 + 340 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 759964 + ... + 990003.

Almost surely, 2^201281204340 is an apocalyptic number.

201281204340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201281204340 is an abundant number, since it is smaller than the sum of its proper divisors (439039086732).

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

201281204340 is a wasteful number, since it uses less digits than its factorization.

201281204340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1750059 (or 1750048 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 201281204340 its reverse (43402182102), we get a palindrome (244683386442).

The spelling of 201281204340 in words is "two hundred one billion, two hundred eighty-one million, two hundred four thousand, three hundred forty".