850131 has 12 divisors (see below), whose sum is σ = 1249560. Its totient is φ = 556800.

The previous prime is 850121. The next prime is 850133. The reversal of 850131 is 131058.

850131 = 98² + 99² + ... + 151².

It is a happy number.

It is not a de Polignac number, because 850131 - 2¹⁴ = 833747 is a prime.

It is a super-2 number, since 2×850131² = 1445445434322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (850133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 270 + ... + 1331.

It is an arithmetic number, because the mean of its divisors is an integer number (104130).

2⁸⁵⁰¹³¹ is an apocalyptic number.

850131 is a deficient number, since it is larger than the sum of its proper divisors (399429).

850131 is a wasteful number, since it uses less digits than its factorization.

850131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1666 (or 1663 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 850131 is about 922.0254877171. The cubic root of 850131 is about 94.7316898270.

Adding to 850131 its reverse (131058), we get a palindrome (981189).

The spelling of 850131 in words is "eight hundred fifty thousand, one hundred thirty-one".