28600331 has 2 divisors, whose sum is σ = 28600332. Its totient is φ = 28600330.

The previous prime is 28600303. The next prime is 28600373. The reversal of 28600331 is 13300682.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28600331 - 2⁶ = 28600267 is a prime.

It is a super-2 number, since 2×28600331² = 1635957866619122, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 28600297 and 28600306.

It is not a weakly prime, because it can be changed into another prime (28600381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14300165 + 14300166.

It is an arithmetic number, because the mean of its divisors is an integer number (14300166).

Almost surely, 2^28600331 is an apocalyptic number.

28600331 is a deficient number, since it is larger than the sum of its proper divisors (1).

28600331 is an equidigital number, since it uses as much as digits as its factorization.

28600331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 28600331 is about 5347.9277295042. The cubic root of 28600331 is about 305.8137581154.

The spelling of 28600331 in words is "twenty-eight million, six hundred thousand, three hundred thirty-one".