331863506 has 16 divisors (see below), whose sum is σ = 536407704. Its totient is φ = 153076224.

The previous prime is 331863461. The next prime is 331863509. The reversal of 331863506 is 605368133.

331863506 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 249798025 + 82065481 = 15805^2 + 9059^2 .

It is a super-2 number, since 2×331863506² = 220266773229224072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (331863509) 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, 61826 + ... + 66978.

Almost surely, 2^331863506 is an apocalyptic number.

331863506 is a deficient number, since it is larger than the sum of its proper divisors (204544198).

331863506 is a wasteful number, since it uses less digits than its factorization.

331863506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7645.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 331863506 is about 18217.1212325109. The cubic root of 331863506 is about 692.3406513850.

The spelling of 331863506 in words is "three hundred thirty-one million, eight hundred sixty-three thousand, five hundred six".