331340077 has 4 divisors (see below), whose sum is σ = 332629596. Its totient is φ = 330050560.

The previous prime is 331340071. The next prime is 331340089. The reversal of 331340077 is 770043133.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 202948516 + 128391561 = 14246^2 + 11331^2 .

It is a cyclic number.

It is not a de Polignac number, because 331340077 - 2²³ = 322951469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331340071) 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, 644374 + ... + 644887.

It is an arithmetic number, because the mean of its divisors is an integer number (83157399).

Almost surely, 2^331340077 is an apocalyptic number.

It is an amenable number.

331340077 is a deficient number, since it is larger than the sum of its proper divisors (1289519).

331340077 is a wasteful number, since it uses less digits than its factorization.

331340077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289518.

The product of its (nonzero) digits is 5292, while the sum is 28.

The square root of 331340077 is about 18202.7491604977. The cubic root of 331340077 is about 691.9764636375.

The spelling of 331340077 in words is "three hundred thirty-one million, three hundred forty thousand, seventy-seven".