1240315103 has 4 divisors (see below), whose sum is σ = 1242197880. Its totient is φ = 1238432328.

The previous prime is 1240315099. The next prime is 1240315159. The reversal of 1240315103 is 3015130421.

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 1240315103 - 2² = 1240315099 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 (1240315163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 940400 + ... + 941717.

It is an arithmetic number, because the mean of its divisors is an integer number (310549470).

Almost surely, 2^1240315103 is an apocalyptic number.

1240315103 is a deficient number, since it is larger than the sum of its proper divisors (1882777).

1240315103 is an equidigital number, since it uses as much as digits as its factorization.

1240315103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1882776.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1240315103 is about 35218.1076010623. The cubic root of 1240315103 is about 1074.4280651189.

Adding to 1240315103 its reverse (3015130421), we get a palindrome (4255445524).

The spelling of 1240315103 in words is "one billion, two hundred forty million, three hundred fifteen thousand, one hundred three".