331077689 has 4 divisors (see below), whose sum is σ = 331116624. Its totient is φ = 331038756.

The previous prime is 331077671. The next prime is 331077701. The reversal of 331077689 is 986770133.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 986770133 = 109 ⋅9052937.

It is a cyclic number.

It is not a de Polignac number, because 331077689 - 2²⁰ = 330029113 is a prime.

It is a super-2 number, since 2×331077689² = 219224872307161442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331077629) 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 3 ways as a sum of consecutive naturals, for example, 647 + ... + 25740.

It is an arithmetic number, because the mean of its divisors is an integer number (82779156).

Almost surely, 2^331077689 is an apocalyptic number.

It is an amenable number.

331077689 is a deficient number, since it is larger than the sum of its proper divisors (38935).

331077689 is a wasteful number, since it uses less digits than its factorization.

331077689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38934.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 331077689 is about 18195.5403602091. The cubic root of 331077689 is about 691.7937568242.

The spelling of 331077689 in words is "three hundred thirty-one million, seventy-seven thousand, six hundred eighty-nine".