2421243331 has 4 divisors (see below), whose sum is σ = 2607492832. Its totient is φ = 2234993832.

The previous prime is 2421243329. The next prime is 2421243347. The reversal of 2421243331 is 1333421242.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1333421242 = 2 ⋅666710621.

It is a cyclic number.

It is not a de Polignac number, because 2421243331 - 2¹ = 2421243329 is a prime.

It is a super-2 number, since 2×2421243331² = 11724838535823951122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2421243296 and 2421243305.

It is not an unprimeable number, because it can be changed into a prime (2421243301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93124731 + ... + 93124756.

It is an arithmetic number, because the mean of its divisors is an integer number (651873208).

Almost surely, 2^2421243331 is an apocalyptic number.

2421243331 is a deficient number, since it is larger than the sum of its proper divisors (186249501).

2421243331 is a wasteful number, since it uses less digits than its factorization.

2421243331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186249500.

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

The square root of 2421243331 is about 49206.1310305941. The cubic root of 2421243331 is about 1342.8045758233.

Adding to 2421243331 its reverse (1333421242), we get a palindrome (3754664573).

The spelling of 2421243331 in words is "two billion, four hundred twenty-one million, two hundred forty-three thousand, three hundred thirty-one".