402330331 has 8 divisors (see below), whose sum is σ = 438764480. Its totient is φ = 366679872.

The previous prime is 402330323. The next prime is 402330337. The reversal of 402330331 is 133033204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 402330331 - 2³ = 402330323 is a prime.

It is a super-2 number, since 2×402330331² = 323739390485139122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 402330299 and 402330308.

It is not an unprimeable number, because it can be changed into a prime (402330337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194850 + ... + 196903.

It is an arithmetic number, because the mean of its divisors is an integer number (54845560).

Almost surely, 2^402330331 is an apocalyptic number.

402330331 is a deficient number, since it is larger than the sum of its proper divisors (36434149).

402330331 is a wasteful number, since it uses less digits than its factorization.

402330331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391845.

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 402330331 is about 20058.1736706012. The cubic root of 402330331 is about 738.2343655539.

Adding to 402330331 its reverse (133033204), we get a palindrome (535363535).

The spelling of 402330331 in words is "four hundred two million, three hundred thirty thousand, three hundred thirty-one".