331689146 has 8 divisors (see below), whose sum is σ = 499104180. Its totient is φ = 165321088.

The previous prime is 331689121. The next prime is 331689157. The reversal of 331689146 is 641986133.

It can be written as a sum of positive squares in 2 ways, for example, as 289374121 + 42315025 = 17011^2 + 6505^2 .

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

It is a super-2 number, since 2×331689146² = 220035379148418632, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260951 + ... + 262218.

Almost surely, 2^331689146 is an apocalyptic number.

331689146 is a deficient number, since it is larger than the sum of its proper divisors (167415034).

331689146 is a wasteful number, since it uses less digits than its factorization.

331689146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523488.

The product of its digits is 93312, while the sum is 41.

The square root of 331689146 is about 18212.3349958208. The cubic root of 331689146 is about 692.2193789730.

The spelling of 331689146 in words is "three hundred thirty-one million, six hundred eighty-nine thousand, one hundred forty-six".