3131144291 has 4 divisors (see below), whose sum is σ = 3415793784. Its totient is φ = 2846494800.

The previous prime is 3131144281. The next prime is 3131144321. The reversal of 3131144291 is 1924411313.

It is a happy number.

3131144291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3131144291 - 2⁶ = 3131144227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3131144281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142324730 + ... + 142324751.

It is an arithmetic number, because the mean of its divisors is an integer number (853948446).

Almost surely, 2^3131144291 is an apocalyptic number.

3131144291 is a deficient number, since it is larger than the sum of its proper divisors (284649493).

3131144291 is a wasteful number, since it uses less digits than its factorization.

3131144291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284649492.

The product of its digits is 2592, while the sum is 29.

The square root of 3131144291 is about 55956.6286600614. The cubic root of 3131144291 is about 1462.9664293172.

The spelling of 3131144291 in words is "three billion, one hundred thirty-one million, one hundred forty-four thousand, two hundred ninety-one".