1201431103 has 2 divisors, whose sum is σ = 1201431104. Its totient is φ = 1201431102.

The previous prime is 1201431079. The next prime is 1201431113. The reversal of 1201431103 is 3011341021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201431103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201431113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600715551 + 600715552.

It is an arithmetic number, because the mean of its divisors is an integer number (600715552).

Almost surely, 2^1201431103 is an apocalyptic number.

1201431103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201431103 is an equidigital number, since it uses as much as digits as its factorization.

1201431103 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1201431103 is about 34661.6661890337. Note that the first 3 decimals coincide. The cubic root of 1201431103 is about 1063.0808385480.

Adding to 1201431103 its reverse (3011341021), we get a palindrome (4212772124).

The spelling of 1201431103 in words is "one billion, two hundred one million, four hundred thirty-one thousand, one hundred three".