202401331 has 4 divisors (see below), whose sum is σ = 220801464. Its totient is φ = 184001200.

The previous prime is 202401293. The next prime is 202401341. The reversal of 202401331 is 133104202.

It is a happy number.

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 202401331 - 2⁷ = 202401203 is a prime.

It is a super-2 number, since 2×202401331² = 81932597581143122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202401341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9200050 + ... + 9200071.

It is an arithmetic number, because the mean of its divisors is an integer number (55200366).

Almost surely, 2^202401331 is an apocalyptic number.

202401331 is a deficient number, since it is larger than the sum of its proper divisors (18400133).

202401331 is a wasteful number, since it uses less digits than its factorization.

202401331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18400132.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 202401331 is about 14226.7821730706. The cubic root of 202401331 is about 587.1347538715.

Adding to 202401331 its reverse (133104202), we get a palindrome (335505533).

The spelling of 202401331 in words is "two hundred two million, four hundred one thousand, three hundred thirty-one".