1253103103 has 4 divisors (see below), whose sum is σ = 1432117840. Its totient is φ = 1074088368.

The previous prime is 1253103101. The next prime is 1253103127. The reversal of 1253103103 is 3013013521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1253103103 - 2¹ = 1253103101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253103101) 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 in 3 ways as a sum of consecutive naturals, for example, 89507358 + ... + 89507371.

It is an arithmetic number, because the mean of its divisors is an integer number (358029460).

Almost surely, 2^1253103103 is an apocalyptic number.

1253103103 is a deficient number, since it is larger than the sum of its proper divisors (179014737).

1253103103 is an equidigital number, since it uses as much as digits as its factorization.

1253103103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179014736.

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

The square root of 1253103103 is about 35399.1963609345. The cubic root of 1253103103 is about 1078.1079994440.

Adding to 1253103103 its reverse (3013013521), we get a palindrome (4266116624).

The spelling of 1253103103 in words is "one billion, two hundred fifty-three million, one hundred three thousand, one hundred three".