28351313 has 2 divisors, whose sum is σ = 28351314. Its totient is φ = 28351312.

The previous prime is 28351277. The next prime is 28351333. The reversal of 28351313 is 31315382.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25684624 + 2666689 = 5068^2 + 1633^2 .

It is a cyclic number.

It is not a de Polignac number, because 28351313 - 2¹⁸ = 28089169 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28351333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14175656 + 14175657.

It is an arithmetic number, because the mean of its divisors is an integer number (14175657).

Almost surely, 2^28351313 is an apocalyptic number.

It is an amenable number.

28351313 is a deficient number, since it is larger than the sum of its proper divisors (1).

28351313 is an equidigital number, since it uses as much as digits as its factorization.

28351313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 26.

The square root of 28351313 is about 5324.5951019772. The cubic root of 28351313 is about 304.9236143031.

Adding to 28351313 its reverse (31315382), we get a palindrome (59666695).

The spelling of 28351313 in words is "twenty-eight million, three hundred fifty-one thousand, three hundred thirteen".