28585031 has 2 divisors, whose sum is σ = 28585032. Its totient is φ = 28585030.

The previous prime is 28585019. The next prime is 28585043. The reversal of 28585031 is 13058582.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (28585019) and next prime (28585043).

It is a cyclic number.

It is not a de Polignac number, because 28585031 - 2¹⁰ = 28584007 is a prime.

It is a super-2 number, since 2×28585031² = 1634207994541922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28585061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14292515 + 14292516.

It is an arithmetic number, because the mean of its divisors is an integer number (14292516).

Almost surely, 2^28585031 is an apocalyptic number.

28585031 is a deficient number, since it is larger than the sum of its proper divisors (1).

28585031 is an equidigital number, since it uses as much as digits as its factorization.

28585031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 28585031 is about 5346.4970775266. The cubic root of 28585031 is about 305.7592157968.

The spelling of 28585031 in words is "twenty-eight million, five hundred eighty-five thousand, thirty-one".