331201906 has 8 divisors (see below), whose sum is σ = 567774720. Its totient is φ = 141943668.

The previous prime is 331201877. The next prime is 331201907. The reversal of 331201906 is 609102133.

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

It is not an unprimeable number, because it can be changed into a prime (331201907) 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 3 ways as a sum of consecutive naturals, for example, 11828626 + ... + 11828653.

It is an arithmetic number, because the mean of its divisors is an integer number (70971840).

Almost surely, 2^331201906 is an apocalyptic number.

331201906 is a deficient number, since it is larger than the sum of its proper divisors (236572814).

331201906 is a wasteful number, since it uses less digits than its factorization.

331201906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23657288.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 331201906 is about 18198.9534314476. The cubic root of 331201906 is about 691.8802640128.

The spelling of 331201906 in words is "three hundred thirty-one million, two hundred one thousand, nine hundred six".