85243013 has 4 divisors (see below), whose sum is σ = 85308960. Its totient is φ = 85177068.

The previous prime is 85243009. The next prime is 85243051. The reversal of 85243013 is 31034258.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85243013 - 2² = 85243009 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85243003) 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 in 3 ways as a sum of consecutive naturals, for example, 30995 + ... + 33632.

It is an arithmetic number, because the mean of its divisors is an integer number (21327240).

Almost surely, 2^85243013 is an apocalyptic number.

It is an amenable number.

85243013 is a deficient number, since it is larger than the sum of its proper divisors (65947).

85243013 is a wasteful number, since it uses less digits than its factorization.

85243013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65946.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 85243013 is about 9232.7142812934. The cubic root of 85243013 is about 440.1015829507.

The spelling of 85243013 in words is "eighty-five million, two hundred forty-three thousand, thirteen".