202001331 has 16 divisors (see below), whose sum is σ = 324012800. Its totient is φ = 109353888.

The previous prime is 202001329. The next prime is 202001339. The reversal of 202001331 is 133100202.

It is a happy number.

It is not a de Polignac number, because 202001331 - 2¹ = 202001329 is a prime.

It is a super-2 number, since 2×202001331² = 81609075451543122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202001339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252736 + ... + 253533.

It is an arithmetic number, because the mean of its divisors is an integer number (20250800).

Almost surely, 2^202001331 is an apocalyptic number.

202001331 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

202001331 is a deficient number, since it is larger than the sum of its proper divisors (122011469).

202001331 is a wasteful number, since it uses less digits than its factorization.

202001331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506298.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 202001331 is about 14212.7172278914. The cubic root of 202001331 is about 586.7477195535.

Adding to 202001331 its reverse (133100202), we get a palindrome (335101533).

The spelling of 202001331 in words is "two hundred two million, one thousand, three hundred thirty-one".