612315031 has 2 divisors, whose sum is σ = 612315032. Its totient is φ = 612315030.

The previous prime is 612315029. The next prime is 612315049. The reversal of 612315031 is 130513216.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 612315031 - 2¹ = 612315029 is a prime.

It is a super-2 number, since 2×612315031² = 749859394377061922, which contains 22 as substring.

Together with 612315029, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 612314993 and 612315011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612315001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306157515 + 306157516.

It is an arithmetic number, because the mean of its divisors is an integer number (306157516).

Almost surely, 2^612315031 is an apocalyptic number.

612315031 is a deficient number, since it is larger than the sum of its proper divisors (1).

612315031 is an equidigital number, since it uses as much as digits as its factorization.

612315031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 612315031 is about 24745.0001212366. Note that the first 3 decimals coincide. The cubic root of 612315031 is about 849.1641291579.

Adding to 612315031 its reverse (130513216), we get a palindrome (742828247).

The spelling of 612315031 in words is "six hundred twelve million, three hundred fifteen thousand, thirty-one".