1531023103 has 2 divisors, whose sum is σ = 1531023104. Its totient is φ = 1531023102.

The previous prime is 1531023061. The next prime is 1531023121. The reversal of 1531023103 is 3013201351.

It is a strong prime.

It is an emirp because it is prime and its reverse (3013201351) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1531023103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1531023163) 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, 765511551 + 765511552.

It is an arithmetic number, because the mean of its divisors is an integer number (765511552).

Almost surely, 2^1531023103 is an apocalyptic number.

1531023103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1531023103 is an equidigital number, since it uses as much as digits as its factorization.

1531023103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 1531023103 is about 39128.2903153204. The cubic root of 1531023103 is about 1152.5521399078.

Adding to 1531023103 its reverse (3013201351), we get a palindrome (4544224454).

The spelling of 1531023103 in words is "one billion, five hundred thirty-one million, twenty-three thousand, one hundred three".