201331340 has 96 divisors (see below), whose sum is σ = 529441920. Its totient is φ = 62705664.

The previous prime is 201331337. The next prime is 201331343. The reversal of 201331340 is 43133102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (201331337) and next prime (201331343).

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (201331343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67562 + ... + 70478.

It is an arithmetic number, because the mean of its divisors is an integer number (5515020).

Almost surely, 2^201331340 is an apocalyptic number.

201331340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201331340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264720960).

201331340 is an abundant number, since it is smaller than the sum of its proper divisors (328110580).

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

201331340 is a wasteful number, since it uses less digits than its factorization.

201331340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2979 (or 2977 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 201331340 is about 14189.1275277939. The cubic root of 201331340 is about 586.0982995452.

Adding to 201331340 its reverse (43133102), we get a palindrome (244464442).

The spelling of 201331340 in words is "two hundred one million, three hundred thirty-one thousand, three hundred forty".