3131485 has 32 divisors (see below), whose sum is σ = 4803840. Its totient is φ = 1907712.

The previous prime is 3131483. The next prime is 3131489. The reversal of 3131485 is 5841313.

It is a cyclic number.

It is not a de Polignac number, because 3131485 - 2¹ = 3131483 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131483) 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 31 ways as a sum of consecutive naturals, for example, 11167 + ... + 11443.

It is an arithmetic number, because the mean of its divisors is an integer number (150120).

Almost surely, 2^3131485 is an apocalyptic number.

3131485 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3131485 is a deficient number, since it is larger than the sum of its proper divisors (1672355).

3131485 is a wasteful number, since it uses less digits than its factorization.

3131485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325.

The product of its digits is 1440, while the sum is 25.

The square root of 3131485 is about 1769.6002373418. The cubic root of 3131485 is about 146.3019490616.

Adding to 3131485 its reverse (5841313), we get a palindrome (8972798).

The spelling of 3131485 in words is "three million, one hundred thirty-one thousand, four hundred eighty-five".