3121003442 has 4 divisors (see below), whose sum is σ = 4681505166. Its totient is φ = 1560501720.

The previous prime is 3121003427. The next prime is 3121003481. The reversal of 3121003442 is 2443001213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2443001213 = 677 ⋅3608569.

It can be written as a sum of positive squares in only one way, i.e., 2657505601 + 463497841 = 51551^2 + 21529^2 .

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 as a sum of consecutive naturals, namely, 780250859 + ... + 780250862.

Almost surely, 2^3121003442 is an apocalyptic number.

3121003442 is a deficient number, since it is larger than the sum of its proper divisors (1560501724).

3121003442 is a wasteful number, since it uses less digits than its factorization.

3121003442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560501723.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 3121003442 is about 55865.9416997512. The cubic root of 3121003442 is about 1461.3853495456.

Adding to 3121003442 its reverse (2443001213), we get a palindrome (5564004655).

The spelling of 3121003442 in words is "three billion, one hundred twenty-one million, three thousand, four hundred forty-two".