3131240225 has 24 divisors (see below), whose sum is σ = 3946122432. Its totient is φ = 2464257600.

The previous prime is 3131240201. The next prime is 3131240239. The reversal of 3131240225 is 5220421313.

It is not a de Polignac number, because 3131240225 - 2¹⁰ = 3131239201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3131240225.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 926639 + ... + 930011.

It is an arithmetic number, because the mean of its divisors is an integer number (164421768).

Almost surely, 2^3131240225 is an apocalyptic number.

It is an amenable number.

3131240225 is a deficient number, since it is larger than the sum of its proper divisors (814882207).

3131240225 is a wasteful number, since it uses less digits than its factorization.

3131240225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3977 (or 3972 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 3131240225 is about 55957.4858709717. The cubic root of 3131240225 is about 1462.9813702648.

Adding to 3131240225 its reverse (5220421313), we get a palindrome (8351661538).

The spelling of 3131240225 in words is "three billion, one hundred thirty-one million, two hundred forty thousand, two hundred twenty-five".