3131147 has 4 divisors (see below), whose sum is σ = 3135216. Its totient is φ = 3127080.

The previous prime is 3131137. The next prime is 3131153. The reversal of 3131147 is 7411313.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3131147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3131137) 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, 488 + ... + 2549.

It is an arithmetic number, because the mean of its divisors is an integer number (783804).

Almost surely, 2^3131147 is an apocalyptic number.

3131147 is a deficient number, since it is larger than the sum of its proper divisors (4069).

3131147 is a wasteful number, since it uses less digits than its factorization.

3131147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4068.

The product of its digits is 252, while the sum is 20.

The square root of 3131147 is about 1769.5047329691. The cubic root of 3131147 is about 146.2966851226.

The spelling of 3131147 in words is "three million, one hundred thirty-one thousand, one hundred forty-seven".