3121421330 has 16 divisors (see below), whose sum is σ = 5625518040. Its totient is φ = 1247021952.

The previous prime is 3121421321. The next prime is 3121421363. The reversal of 3121421330 is 331241213.

It can be written as a sum of positive squares in 4 ways, for example, as 3074813401 + 46607929 = 55451^2 + 6827^2 .

It is a super-2 number, since 2×3121421330² = 19486542238757937800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184829 + ... + 201008.

Almost surely, 2^3121421330 is an apocalyptic number.

3121421330 is a deficient number, since it is larger than the sum of its proper divisors (2504096710).

3121421330 is a wasteful number, since it uses less digits than its factorization.

3121421330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386653.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 3121421330 is about 55869.6816708311. The cubic root of 3121421330 is about 1461.4505708927.

Adding to 3121421330 its reverse (331241213), we get a palindrome (3452662543).

The spelling of 3121421330 in words is "three billion, one hundred twenty-one million, four hundred twenty-one thousand, three hundred thirty".