612355231 has 2 divisors, whose sum is σ = 612355232. Its totient is φ = 612355230.

The previous prime is 612355201. The next prime is 612355253. The reversal of 612355231 is 132553216.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 612355231 - 2⁷ = 612355103 is a prime.

It is a super-2 number, since 2×612355231² = 749957857866126722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 612355231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612355201) 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, 306177615 + 306177616.

It is an arithmetic number, because the mean of its divisors is an integer number (306177616).

Almost surely, 2^612355231 is an apocalyptic number.

612355231 is a deficient number, since it is larger than the sum of its proper divisors (1).

612355231 is an equidigital number, since it uses as much as digits as its factorization.

612355231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5400, while the sum is 28.

The square root of 612355231 is about 24745.8123932111. The cubic root of 612355231 is about 849.1827119948.

It can be divided in two parts, 61235 and 5231, that added together give a palindrome (66466).

The spelling of 612355231 in words is "six hundred twelve million, three hundred fifty-five thousand, two hundred thirty-one".