3121151143 has 4 divisors (see below), whose sum is σ = 3404892168. Its totient is φ = 2837410120.

The previous prime is 3121151123. The next prime is 3121151213. The reversal of 3121151143 is 3411511213.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3411511213 = 11 ⋅310137383.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3121151143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121151123) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 141870496 + ... + 141870517.

It is an arithmetic number, because the mean of its divisors is an integer number (851223042).

Almost surely, 2^3121151143 is an apocalyptic number.

3121151143 is a deficient number, since it is larger than the sum of its proper divisors (283741025).

3121151143 is a wasteful number, since it uses less digits than its factorization.

3121151143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283741024.

The product of its digits is 360, while the sum is 22.

The square root of 3121151143 is about 55867.2636075904. The cubic root of 3121151143 is about 1461.4084024597.

Adding to 3121151143 its reverse (3411511213), we get a palindrome (6532662356).

The spelling of 3121151143 in words is "three billion, one hundred twenty-one million, one hundred fifty-one thousand, one hundred forty-three".