612445231 has 2 divisors, whose sum is σ = 612445232. Its totient is φ = 612445230.

The previous prime is 612445217. The next prime is 612445277. The reversal of 612445231 is 132544216.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 612445231 - 2⁵ = 612445199 is a prime.

It is a super-2 number, since 2×612445231² = 750178321949286722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 612445231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612445531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306222615 + 306222616.

It is an arithmetic number, because the mean of its divisors is an integer number (306222616).

Almost surely, 2^612445231 is an apocalyptic number.

612445231 is a deficient number, since it is larger than the sum of its proper divisors (1).

612445231 is an equidigital number, since it uses as much as digits as its factorization.

612445231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 28.

The square root of 612445231 is about 24747.6308158983. The cubic root of 612445231 is about 849.2243124125.

Adding to 612445231 its reverse (132544216), we get a palindrome (744989447).

The spelling of 612445231 in words is "six hundred twelve million, four hundred forty-five thousand, two hundred thirty-one".