85213019 has 2 divisors, whose sum is σ = 85213020. Its totient is φ = 85213018.

The previous prime is 85213003. The next prime is 85213031. The reversal of 85213019 is 91031258.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85213019 - 2⁴ = 85213003 is a prime.

It is a super-2 number, since 2×85213019² = 14522517214188722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 85212982 and 85213000.

It is not a weakly prime, because it can be changed into another prime (85213319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42606509 + 42606510.

It is an arithmetic number, because the mean of its divisors is an integer number (42606510).

Almost surely, 2^85213019 is an apocalyptic number.

85213019 is a deficient number, since it is larger than the sum of its proper divisors (1).

85213019 is an equidigital number, since it uses as much as digits as its factorization.

85213019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 85213019 is about 9231.0898056513. The cubic root of 85213019 is about 440.0499581704.

The spelling of 85213019 in words is "eighty-five million, two hundred thirteen thousand, nineteen".