201340232406 has 24 divisors (see below), whose sum is σ = 436281678144. Its totient is φ = 67106563440.

The previous prime is 201340232399. The next prime is 201340232407. The reversal of 201340232406 is 604232043102.

201340232406 is a `hidden beast` number, since 2 + 0 + 13 + 402 + 3 + 240 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 201340232406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201340232407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 387705 + ... + 743636.

It is an arithmetic number, because the mean of its divisors is an integer number (18178403256).

Almost surely, 2^201340232406 is an apocalyptic number.

201340232406 is an abundant number, since it is smaller than the sum of its proper divisors (234941445738).

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

201340232406 is a wasteful number, since it uses less digits than its factorization.

201340232406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1141236 (or 1141233 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 201340232406 its reverse (604232043102), we get a palindrome (805572275508).

The spelling of 201340232406 in words is "two hundred one billion, three hundred forty million, two hundred thirty-two thousand, four hundred six".