1230345251 has 2 divisors, whose sum is σ = 1230345252. Its totient is φ = 1230345250.

The previous prime is 1230345227. The next prime is 1230345257. The reversal of 1230345251 is 1525430321.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1230345251 - 2¹⁴ = 1230328867 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1230345251.

It is not a weakly prime, because it can be changed into another prime (1230345257) 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, 615172625 + 615172626.

It is an arithmetic number, because the mean of its divisors is an integer number (615172626).

Almost surely, 2^1230345251 is an apocalyptic number.

1230345251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230345251 is an equidigital number, since it uses as much as digits as its factorization.

1230345251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 1230345251 is about 35076.2776103737. The cubic root of 1230345251 is about 1071.5415085971.

Adding to 1230345251 its reverse (1525430321), we get a palindrome (2755775572).

The spelling of 1230345251 in words is "one billion, two hundred thirty million, three hundred forty-five thousand, two hundred fifty-one".