328031961 has 4 divisors (see below), whose sum is σ = 437375952. Its totient is φ = 218687972.

The previous prime is 328031927. The next prime is 328031971. The reversal of 328031961 is 169130823.

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.

It is a cyclic number.

It is not a de Polignac number, because 328031961 - 2¹¹ = 328029913 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (328031971) 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, 54671991 + ... + 54671996.

It is an arithmetic number, because the mean of its divisors is an integer number (109343988).

Almost surely, 2^328031961 is an apocalyptic number.

It is an amenable number.

328031961 is a deficient number, since it is larger than the sum of its proper divisors (109343991).

328031961 is a wasteful number, since it uses less digits than its factorization.

328031961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109343990.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 328031961 is about 18111.6526302820. The cubic root of 328031961 is about 689.6658474448.

The spelling of 328031961 in words is "three hundred twenty-eight million, thirty-one thousand, nine hundred sixty-one".