201001232113231 has 4 divisors (see below), whose sum is σ = 219274071396264. Its totient is φ = 182728392830200.

The previous prime is 201001232113219. The next prime is 201001232113249. The reversal of 201001232113231 is 132311232100102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201001232113231 - 2¹⁹ = 201001231588943 is a prime.

It is a super-2 number, since 2×201001232113231² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201001232113531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9136419641500 + ... + 9136419641521.

It is an arithmetic number, because the mean of its divisors is an integer number (54818517849066).

Almost surely, 2^{201001232113231} is an apocalyptic number.

201001232113231 is a deficient number, since it is larger than the sum of its proper divisors (18272839283033).

201001232113231 is a wasteful number, since it uses less digits than its factorization.

201001232113231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18272839283032.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 201001232113231 its reverse (132311232100102), we get a palindrome (333312464213333).

The spelling of 201001232113231 in words is "two hundred one trillion, one billion, two hundred thirty-two million, one hundred thirteen thousand, two hundred thirty-one".