1199115103 has 4 divisors (see below), whose sum is σ = 1200851128. Its totient is φ = 1197379080.

The previous prime is 1199115059. The next prime is 1199115119. The reversal of 1199115103 is 3015119911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3015119911 = 241 ⋅12510871.

It is a cyclic number.

It is not a de Polignac number, because 1199115103 - 2²¹ = 1197017951 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 (1199115173) 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, 866976 + ... + 868357.

It is an arithmetic number, because the mean of its divisors is an integer number (300212782).

Almost surely, 2^1199115103 is an apocalyptic number.

1199115103 is a deficient number, since it is larger than the sum of its proper divisors (1736025).

1199115103 is an equidigital number, since it uses as much as digits as its factorization.

1199115103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1736024.

The product of its (nonzero) digits is 1215, while the sum is 31.

The square root of 1199115103 is about 34628.2414078451. The cubic root of 1199115103 is about 1062.3972984561.

The spelling of 1199115103 in words is "one billion, one hundred ninety-nine million, one hundred fifteen thousand, one hundred three".