3121241311 has 4 divisors (see below), whose sum is σ = 3158846712. Its totient is φ = 3083635912.

The previous prime is 3121241309. The next prime is 3121241323. The reversal of 3121241311 is 1131421213.

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 3121241311 - 2¹ = 3121241309 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 (3121241341) 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, 18802576 + ... + 18802741.

It is an arithmetic number, because the mean of its divisors is an integer number (789711678).

Almost surely, 2^3121241311 is an apocalyptic number.

3121241311 is a deficient number, since it is larger than the sum of its proper divisors (37605401).

3121241311 is an equidigital number, since it uses as much as digits as its factorization.

3121241311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37605400.

The product of its digits is 144, while the sum is 19.

The square root of 3121241311 is about 55868.0705859796. The cubic root of 3121241311 is about 1461.4224753661.

Adding to 3121241311 its reverse (1131421213), we get a palindrome (4252662524).

The spelling of 3121241311 in words is "three billion, one hundred twenty-one million, two hundred forty-one thousand, three hundred eleven".