6985131 has 4 divisors (see below), whose sum is σ = 9313512. Its totient is φ = 4656752.

The previous prime is 6985081. The next prime is 6985133. The reversal of 6985131 is 1315896.

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 6985131 - 2¹³ = 6976939 is a prime.

It is a super-2 number, since 2×6985131² = 97584110174322, which contains 22 as substring.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 6985092 and 6985101.

It is not an unprimeable number, because it can be changed into a prime (6985133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1164186 + ... + 1164191.

It is an arithmetic number, because the mean of its divisors is an integer number (2328378).

Almost surely, 2^6985131 is an apocalyptic number.

6985131 is a deficient number, since it is larger than the sum of its proper divisors (2328381).

6985131 is a wasteful number, since it uses less digits than its factorization.

6985131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2328380.

The product of its digits is 6480, while the sum is 33.

The square root of 6985131 is about 2642.9398404050. The cubic root of 6985131 is about 191.1575776257.

The spelling of 6985131 in words is "six million, nine hundred eighty-five thousand, one hundred thirty-one".