201101432238 has 384 divisors, whose sum is σ = 569641766400. Its totient is φ = 52223947776.

The previous prime is 201101432237. The next prime is 201101432249. The reversal of 201101432238 is 832234101102.

201101432238 is a `hidden beast` number, since 201 + 1 + 0 + 1 + 432 + 23 + 8 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201101432237) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 159730453 + ... + 159731711.

It is an arithmetic number, because the mean of its divisors is an integer number (1483442100).

Almost surely, 2^201101432238 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201101432238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284820883200).

201101432238 is an abundant number, since it is smaller than the sum of its proper divisors (368540334162).

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

201101432238 is a wasteful number, since it uses less digits than its factorization.

201101432238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1421 (or 1408 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The spelling of 201101432238 in words is "two hundred one billion, one hundred one million, four hundred thirty-two thousand, two hundred thirty-eight".