612441331 has 2 divisors, whose sum is σ = 612441332. Its totient is φ = 612441330.

The previous prime is 612441329. The next prime is 612441359. The reversal of 612441331 is 133144216.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 612441331 - 2¹ = 612441329 is a prime.

It is a super-2 number, since 2×612441331² = 750168767834103122, which contains 22 as substring.

Together with 612441329, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 612441296 and 612441305.

It is not a weakly prime, because it can be changed into another prime (612441391) by changing a digit.

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 as a sum of consecutive naturals, namely, 306220665 + 306220666.

It is an arithmetic number, because the mean of its divisors is an integer number (306220666).

Almost surely, 2^612441331 is an apocalyptic number.

612441331 is a deficient number, since it is larger than the sum of its proper divisors (1).

612441331 is an equidigital number, since it uses as much as digits as its factorization.

612441331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 25.

The square root of 612441331 is about 24747.5520203514. The cubic root of 612441331 is about 849.2225098122. Note that the first 3 decimals are identical.

Adding to 612441331 its reverse (133144216), we get a palindrome (745585547).

The spelling of 612441331 in words is "six hundred twelve million, four hundred forty-one thousand, three hundred thirty-one".