85031187 has 4 divisors (see below), whose sum is σ = 113374920. Its totient is φ = 56687456.

The previous prime is 85031159. The next prime is 85031231. The reversal of 85031187 is 78113058.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85031187 - 2¹⁰ = 85030163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85031147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14171862 + ... + 14171867.

It is an arithmetic number, because the mean of its divisors is an integer number (28343730).

Almost surely, 2^85031187 is an apocalyptic number.

85031187 is a deficient number, since it is larger than the sum of its proper divisors (28343733).

85031187 is a wasteful number, since it uses less digits than its factorization.

85031187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28343732.

The product of its (nonzero) digits is 6720, while the sum is 33.

The square root of 85031187 is about 9221.2356547265. The cubic root of 85031187 is about 439.7367347295.

The spelling of 85031187 in words is "eighty-five million, thirty-one thousand, one hundred eighty-seven".