85303913 has 2 divisors, whose sum is σ = 85303914. Its totient is φ = 85303912.

The previous prime is 85303891. The next prime is 85303927. The reversal of 85303913 is 31930358.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84584809 + 719104 = 9197^2 + 848^2 .

It is a cyclic number.

It is not a de Polignac number, because 85303913 - 2¹⁴ = 85287529 is a prime.

It is a super-2 number, since 2×85303913² = 14553515146223138, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 85303913.

It is not a weakly prime, because it can be changed into another prime (85303973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42651956 + 42651957.

It is an arithmetic number, because the mean of its divisors is an integer number (42651957).

Almost surely, 2^85303913 is an apocalyptic number.

It is an amenable number.

85303913 is a deficient number, since it is larger than the sum of its proper divisors (1).

85303913 is an equidigital number, since it uses as much as digits as its factorization.

85303913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 85303913 is about 9236.0117475023. The cubic root of 85303913 is about 440.2063649742.

The spelling of 85303913 in words is "eighty-five million, three hundred three thousand, nine hundred thirteen".