328615031 has 2 divisors, whose sum is σ = 328615032. Its totient is φ = 328615030.

The previous prime is 328615003. The next prime is 328615033. The reversal of 328615031 is 130516823.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-328615031 is a prime.

It is a super-2 number, since 2×328615031² = 215975677198261922, which contains 22 as substring.

Together with 328615033, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 328614985 and 328615003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (328615033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164307515 + 164307516.

It is an arithmetic number, because the mean of its divisors is an integer number (164307516).

Almost surely, 2^328615031 is an apocalyptic number.

328615031 is a deficient number, since it is larger than the sum of its proper divisors (1).

328615031 is an equidigital number, since it uses as much as digits as its factorization.

328615031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 328615031 is about 18127.7420270700. The cubic root of 328615031 is about 690.0742278193.

The spelling of 328615031 in words is "three hundred twenty-eight million, six hundred fifteen thousand, thirty-one".