1530231403 has 2 divisors, whose sum is σ = 1530231404. Its totient is φ = 1530231402.

The previous prime is 1530231389. The next prime is 1530231413. The reversal of 1530231403 is 3041320351.

It is a strong prime.

It is an emirp because it is prime and its reverse (3041320351) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1530231403 - 2²⁵ = 1496676971 is a prime.

It is not a weakly prime, because it can be changed into another prime (1530231413) 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, 765115701 + 765115702.

It is an arithmetic number, because the mean of its divisors is an integer number (765115702).

Almost surely, 2^1530231403 is an apocalyptic number.

1530231403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1530231403 is an equidigital number, since it uses as much as digits as its factorization.

1530231403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 1530231403 is about 39118.1722860361. The cubic root of 1530231403 is about 1152.3534420884.

Adding to 1530231403 its reverse (3041320351), we get a palindrome (4571551754).

The spelling of 1530231403 in words is "one billion, five hundred thirty million, two hundred thirty-one thousand, four hundred three".