3121040311 has 8 divisors (see below), whose sum is σ = 3188735424. Its totient is φ = 3053399040.

The previous prime is 3121040303. The next prime is 3121040369. The reversal of 3121040311 is 1130401213.

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 3121040311 - 2³ = 3121040303 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 (3121040371) 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, 117331 + ... + 141451.

It is an arithmetic number, because the mean of its divisors is an integer number (398591928).

Almost surely, 2^3121040311 is an apocalyptic number.

3121040311 is a deficient number, since it is larger than the sum of its proper divisors (67695113).

3121040311 is a wasteful number, since it uses less digits than its factorization.

3121040311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26921.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 3121040311 is about 55866.2716762091. The cubic root of 3121040311 is about 1461.3911040629.

Adding to 3121040311 its reverse (1130401213), we get a palindrome (4251441524).

The spelling of 3121040311 in words is "three billion, one hundred twenty-one million, forty thousand, three hundred eleven".