3131313817 has 8 divisors (see below), whose sum is σ = 3268025280. Its totient is φ = 2994649680.

The previous prime is 3131313803. The next prime is 3131313833. The reversal of 3131313817 is 7183131313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3131313817 - 2¹¹ = 3131311769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3131313847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221559 + ... + 235267.

It is an arithmetic number, because the mean of its divisors is an integer number (408503160).

Almost surely, 2^3131313817 is an apocalyptic number.

It is an amenable number.

3131313817 is a deficient number, since it is larger than the sum of its proper divisors (136711463).

3131313817 is a wasteful number, since it uses less digits than its factorization.

3131313817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23663.

The product of its digits is 4536, while the sum is 31.

The square root of 3131313817 is about 55958.1434377518. The cubic root of 3131313817 is about 1462.9928314190.

The spelling of 3131313817 in words is "three billion, one hundred thirty-one million, three hundred thirteen thousand, eight hundred seventeen".