2421313331 has 4 divisors (see below), whose sum is σ = 2462352600. Its totient is φ = 2380274064.

The previous prime is 2421313313. The next prime is 2421313333. The reversal of 2421313331 is 1333131242.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1333131242 = 2 ⋅666565621.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2421313331 is a prime.

It is a super-2 number, since 2×2421313331² = 11725516493756631122, 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 = 2421313297 and 2421313306.

It is not an unprimeable number, because it can be changed into a prime (2421313333) 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, 20519546 + ... + 20519663.

It is an arithmetic number, because the mean of its divisors is an integer number (615588150).

Almost surely, 2^2421313331 is an apocalyptic number.

2421313331 is a deficient number, since it is larger than the sum of its proper divisors (41039269).

2421313331 is an equidigital number, since it uses as much as digits as its factorization.

2421313331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41039268.

The product of its digits is 1296, while the sum is 23.

The square root of 2421313331 is about 49206.8423189296. The cubic root of 2421313331 is about 1342.8175162017.

Adding to 2421313331 its reverse (1333131242), we get a palindrome (3754444573).

The spelling of 2421313331 in words is "two billion, four hundred twenty-one million, three hundred thirteen thousand, three hundred thirty-one".