331406336661 has 8 divisors (see below), whose sum is σ = 443447625984. Its totient is φ = 220151302560.

The previous prime is 331406336617. The next prime is 331406336699. The reversal of 331406336661 is 166633604133.

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

It is not a de Polignac number, because 331406336661 - 2¹⁷ = 331406205589 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331406336761) 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 7 ways as a sum of consecutive naturals, for example, 196562821 + ... + 196564506.

It is an arithmetic number, because the mean of its divisors is an integer number (55430953248).

Almost surely, 2^331406336661 is an apocalyptic number.

It is an amenable number.

331406336661 is a deficient number, since it is larger than the sum of its proper divisors (112041289323).

331406336661 is a wasteful number, since it uses less digits than its factorization.

331406336661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393127611.

The product of its (nonzero) digits is 419904, while the sum is 42.

The spelling of 331406336661 in words is "three hundred thirty-one billion, four hundred six million, three hundred thirty-six thousand, six hundred sixty-one".