331013402 has 16 divisors (see below), whose sum is σ = 523030560. Its totient is φ = 156682512.

The previous prime is 331013393. The next prime is 331013407. The reversal of 331013402 is 204310133.

It is a happy number.

It is a super-2 number, since 2×331013402² = 219139744607227208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (331013407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75893 + ... + 80135.

It is an arithmetic number, because the mean of its divisors is an integer number (32689410).

Almost surely, 2^331013402 is an apocalyptic number.

331013402 is a deficient number, since it is larger than the sum of its proper divisors (192017158).

331013402 is a wasteful number, since it uses less digits than its factorization.

331013402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6317.

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

The square root of 331013402 is about 18193.7737152027. The cubic root of 331013402 is about 691.7489775819.

Adding to 331013402 its reverse (204310133), we get a palindrome (535323535).

The spelling of 331013402 in words is "three hundred thirty-one million, thirteen thousand, four hundred two".