3133242421 has 4 divisors (see below), whose sum is σ = 3139256844. Its totient is φ = 3127228000.

The previous prime is 3133242403. The next prime is 3133242467. The reversal of 3133242421 is 1242423313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1242423313 = 1777 ⋅699169.

It can be written as a sum of positive squares in 2 ways, for example, as 1543625521 + 1589616900 = 39289^2 + 39870^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3133242421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3133242121) by changing a digit.

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, 3006430 + ... + 3007471.

It is an arithmetic number, because the mean of its divisors is an integer number (784814211).

Almost surely, 2^3133242421 is an apocalyptic number.

It is an amenable number.

3133242421 is a deficient number, since it is larger than the sum of its proper divisors (6014423).

3133242421 is an equidigital number, since it uses as much as digits as its factorization.

3133242421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6014422.

The product of its digits is 3456, while the sum is 25.

The square root of 3133242421 is about 55975.3733439983. The cubic root of 3133242421 is about 1463.2931265369.

Adding to 3133242421 its reverse (1242423313), we get a palindrome (4375665734).

The spelling of 3133242421 in words is "three billion, one hundred thirty-three million, two hundred forty-two thousand, four hundred twenty-one".