3121302243 has 16 divisors (see below), whose sum is σ = 4303103616. Its totient is φ = 2011133760.

The previous prime is 3121302227. The next prime is 3121302281. The reversal of 3121302243 is 3422031213.

3121302243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3121302243 - 2⁴ = 3121302227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3121302293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105421 + ... + 131742.

It is an arithmetic number, because the mean of its divisors is an integer number (268943976).

Almost surely, 2^3121302243 is an apocalyptic number.

3121302243 is a deficient number, since it is larger than the sum of its proper divisors (1181801373).

3121302243 is a wasteful number, since it uses less digits than its factorization.

3121302243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237314.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 3121302243 is about 55868.6159037433. The cubic root of 3121302243 is about 1461.4319851312.

Adding to 3121302243 its reverse (3422031213), we get a palindrome (6543333456).

The spelling of 3121302243 in words is "three billion, one hundred twenty-one million, three hundred two thousand, two hundred forty-three".