3121303442 has 16 divisors (see below), whose sum is σ = 4733917440. Its totient is φ = 1543356288.

The previous prime is 3121303441. The next prime is 3121303447. The reversal of 3121303442 is 2443031213.

3121303442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (3121303441) 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, 275159 + ... + 286277.

It is an arithmetic number, because the mean of its divisors is an integer number (295869840).

Almost surely, 2^3121303442 is an apocalyptic number.

3121303442 is a deficient number, since it is larger than the sum of its proper divisors (1612613998).

3121303442 is a wasteful number, since it uses less digits than its factorization.

3121303442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12665.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 3121303442 is about 55868.6266342748. The cubic root of 3121303442 is about 1461.4321722600.

Adding to 3121303442 its reverse (2443031213), we get a palindrome (5564334655).

The spelling of 3121303442 in words is "three billion, one hundred twenty-one million, three hundred three thousand, four hundred forty-two".