3131149311691 has 8 divisors (see below), whose sum is σ = 3138337028160. Its totient is φ = 3123962135112.

The previous prime is 3131149311683. The next prime is 3131149311737. The reversal of 3131149311691 is 1961139411313.

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

It is a cyclic number.

It is not a de Polignac number, because 3131149311691 - 2³ = 3131149311683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3131149311611) 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, 12923220 + ... + 13163278.

It is an arithmetic number, because the mean of its divisors is an integer number (392292128520).

Almost surely, 2^{3131149311691} is an apocalyptic number.

3131149311691 is a deficient number, since it is larger than the sum of its proper divisors (7187716469).

3131149311691 is a wasteful number, since it uses less digits than its factorization.

3131149311691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269945.

The product of its digits is 52488, while the sum is 43.

The spelling of 3131149311691 in words is "three trillion, one hundred thirty-one billion, one hundred forty-nine million, three hundred eleven thousand, six hundred ninety-one".