85229031 has 8 divisors (see below), whose sum is σ = 114701184. Its totient is φ = 56288120.

The previous prime is 85229021. The next prime is 85229047. The reversal of 85229031 is 13092258.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85229031 - 2⁷ = 85228903 is a prime.

It is a super-2 number, since 2×85229031² = 14527975450397922, 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 85229031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85229021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132435 + ... + 133076.

It is an arithmetic number, because the mean of its divisors is an integer number (14337648).

Almost surely, 2^85229031 is an apocalyptic number.

85229031 is a deficient number, since it is larger than the sum of its proper divisors (29472153).

85229031 is a wasteful number, since it uses less digits than its factorization.

85229031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265621.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 85229031 is about 9231.9570514599. The cubic root of 85229031 is about 440.0775190554.

The spelling of 85229031 in words is "eighty-five million, two hundred twenty-nine thousand, thirty-one".