1245325231 has 2 divisors, whose sum is σ = 1245325232. Its totient is φ = 1245325230.

The previous prime is 1245325229. The next prime is 1245325247. The reversal of 1245325231 is 1325235421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1245325231 - 2¹ = 1245325229 is a prime.

It is a super-2 number, since 2×1245325231² = 3101669861930406722, which contains 22 as substring.

Together with 1245325229, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1245325231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1245325261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622662615 + 622662616.

It is an arithmetic number, because the mean of its divisors is an integer number (622662616).

Almost surely, 2^1245325231 is an apocalyptic number.

1245325231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1245325231 is an equidigital number, since it uses as much as digits as its factorization.

1245325231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7200, while the sum is 28.

The square root of 1245325231 is about 35289.1659153344. The cubic root of 1245325231 is about 1075.8728029072.

The spelling of 1245325231 in words is "one billion, two hundred forty-five million, three hundred twenty-five thousand, two hundred thirty-one".