85143213 has 24 divisors (see below), whose sum is σ = 124986368. Its totient is φ = 55847232.

The previous prime is 85143197. The next prime is 85143257. The reversal of 85143213 is 31234158.

It is a happy number.

It is not a de Polignac number, because 85143213 - 2⁴ = 85143197 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 (85143013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 186081 + ... + 186537.

Almost surely, 2^85143213 is an apocalyptic number.

It is an amenable number.

85143213 is a deficient number, since it is larger than the sum of its proper divisors (39843155).

85143213 is a wasteful number, since it uses less digits than its factorization.

85143213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753 (or 750 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 85143213 is about 9227.3080039630. The cubic root of 85143213 is about 439.9297632378.

The spelling of 85143213 in words is "eighty-five million, one hundred forty-three thousand, two hundred thirteen".