985131 has 24 divisors (see below), whose sum is σ = 1713920. Its totient is φ = 532656.

The previous prime is 985129. The next prime is 985151. The reversal of 985131 is 131589.

985131 = T₄₉ + T₅₀ + ... + T₁₈₁.

It is not a de Polignac number, because 985131 - 2¹ = 985129 is a prime.

It is a super-2 number, since 2×985131² = 1940966174322, which contains 22 as substring.

It is a Duffinian number.

985131 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 985095 and 985104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985121) 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, 786 + ... + 1608.

2⁹⁸⁵¹³¹ is an apocalyptic number.

985131 is a deficient number, since it is larger than the sum of its proper divisors (728789).

985131 is a wasteful number, since it uses less digits than its factorization.

985131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855 (or 852 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 985131 is about 992.5376567164. The cubic root of 985131 is about 99.5018896470.

The spelling of 985131 in words is "nine hundred eighty-five thousand, one hundred thirty-one".