3121311442 has 8 divisors (see below), whose sum is σ = 4715650800. Its totient is φ = 1549427844.

The previous prime is 3121311437. The next prime is 3121311463. The reversal of 3121311442 is 2441131213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 5613592 + ... + 5614147.

It is an arithmetic number, because the mean of its divisors is an integer number (589456350).

Almost surely, 2^3121311442 is an apocalyptic number.

3121311442 is a deficient number, since it is larger than the sum of its proper divisors (1594339358).

3121311442 is a wasteful number, since it uses less digits than its factorization.

3121311442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11227880.

The product of its digits is 576, while the sum is 22.

The square root of 3121311442 is about 55868.6982307625. The cubic root of 3121311442 is about 1461.4334208247.

Adding to 3121311442 its reverse (2441131213), we get a palindrome (5562442655).

The spelling of 3121311442 in words is "three billion, one hundred twenty-one million, three hundred eleven thousand, four hundred forty-two".