1181172103 has 2 divisors, whose sum is σ = 1181172104. Its totient is φ = 1181172102.

The previous prime is 1181172079. The next prime is 1181172119. The reversal of 1181172103 is 3012711811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1181172103 - 2⁹ = 1181171591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1181172143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 590586051 + 590586052.

It is an arithmetic number, because the mean of its divisors is an integer number (590586052).

Almost surely, 2^1181172103 is an apocalyptic number.

1181172103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1181172103 is an equidigital number, since it uses as much as digits as its factorization.

1181172103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 25.

The square root of 1181172103 is about 34368.1844588858. The cubic root of 1181172103 is about 1057.0715727517.

Adding to 1181172103 its reverse (3012711811), we get a palindrome (4193883914).

The spelling of 1181172103 in words is "one billion, one hundred eighty-one million, one hundred seventy-two thousand, one hundred three".