1211304103 has 8 divisors (see below), whose sum is σ = 1257605280. Its totient is φ = 1165305120.

The previous prime is 1211304089. The next prime is 1211304121. The reversal of 1211304103 is 3014031121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1211304103 - 2²¹ = 1209206951 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 (1211304503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67363 + ... + 83428.

It is an arithmetic number, because the mean of its divisors is an integer number (157200660).

Almost surely, 2^1211304103 is an apocalyptic number.

1211304103 is a deficient number, since it is larger than the sum of its proper divisors (46301177).

1211304103 is a wasteful number, since it uses less digits than its factorization.

1211304103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151097.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1211304103 is about 34803.7943764757. The cubic root of 1211304103 is about 1065.9849244055.

Adding to 1211304103 its reverse (3014031121), we get a palindrome (4225335224).

The spelling of 1211304103 in words is "one billion, two hundred eleven million, three hundred four thousand, one hundred three".