201331531245 has 16 divisors (see below), whose sum is σ = 346909715712. Its totient is φ = 99117061440.

The previous prime is 201331531241. The next prime is 201331531279. The reversal of 201331531245 is 542135133102.

It is not a de Polignac number, because 201331531245 - 2² = 201331531241 is a prime.

It is a super-3 number, since 3×201331531245³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201331531241) 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, 516234501 + ... + 516234890.

It is an arithmetic number, because the mean of its divisors is an integer number (21681857232).

Almost surely, 2^201331531245 is an apocalyptic number.

It is an amenable number.

201331531245 is a deficient number, since it is larger than the sum of its proper divisors (145578184467).

201331531245 is a wasteful number, since it uses less digits than its factorization.

201331531245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032469412.

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 201331531245 its reverse (542135133102), we get a palindrome (743466664347).

The spelling of 201331531245 in words is "two hundred one billion, three hundred thirty-one million, five hundred thirty-one thousand, two hundred forty-five".