331690206 has 8 divisors (see below), whose sum is σ = 663380424. Its totient is φ = 110563400.

The previous prime is 331690193. The next prime is 331690207. The reversal of 331690206 is 602096133.

It is a happy number.

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

331690206 is an admirable number.

It is a super-2 number, since 2×331690206² = 220036785512644872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331690207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27640845 + ... + 27640856.

It is an arithmetic number, because the mean of its divisors is an integer number (82922553).

Almost surely, 2^331690206 is an apocalyptic number.

331690206 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

331690206 is a wasteful number, since it uses less digits than its factorization.

331690206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55281706.

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 331690206 is about 18212.3640969535. The cubic root of 331690206 is about 692.2201163619.

The spelling of 331690206 in words is "three hundred thirty-one million, six hundred ninety thousand, two hundred six".