331533206428 has 48 divisors (see below), whose sum is σ = 628781045760. Its totient is φ = 152481560000.

The previous prime is 331533206377. The next prime is 331533206437. The reversal of 331533206428 is 824602335133.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 422133 + ... + 917203.

It is an arithmetic number, because the mean of its divisors is an integer number (13099605120).

Almost surely, 2^331533206428 is an apocalyptic number.

It is an amenable number.

331533206428 is a deficient number, since it is larger than the sum of its proper divisors (297247839332).

331533206428 is a wasteful number, since it uses less digits than its factorization.

331533206428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495378 (or 495376 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 40.

The spelling of 331533206428 in words is "three hundred thirty-one billion, five hundred thirty-three million, two hundred six thousand, four hundred twenty-eight".