1013125103 has 4 divisors (see below), whose sum is σ = 1014079248. Its totient is φ = 1012170960.

The previous prime is 1013125079. The next prime is 1013125109. The reversal of 1013125103 is 3015213101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3015213101 = 829 ⋅3637169.

It is a cyclic number.

It is not a de Polignac number, because 1013125103 - 2¹⁸ = 1012862959 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 (1013125109) 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, 475478 + ... + 477603.

It is an arithmetic number, because the mean of its divisors is an integer number (253519812).

Almost surely, 2^1013125103 is an apocalyptic number.

1013125103 is a deficient number, since it is larger than the sum of its proper divisors (954145).

1013125103 is an equidigital number, since it uses as much as digits as its factorization.

1013125103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954144.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 1013125103 is about 31829.6261837930. The cubic root of 1013125103 is about 1004.3560317686.

Adding to 1013125103 its reverse (3015213101), we get a palindrome (4028338204).

The spelling of 1013125103 in words is "one billion, thirteen million, one hundred twenty-five thousand, one hundred three".