1101403 has 2 divisors, whose sum is σ = 1101404. Its totient is φ = 1101402.

The previous prime is 1101389. The next prime is 1101407. The reversal of 1101403 is 3041011.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1101403 - 2⁵ = 1101371 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1101403.

It is not a weakly prime, because it can be changed into another prime (1101407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550701 + 550702.

It is an arithmetic number, because the mean of its divisors is an integer number (550702).

2^1101403 is an apocalyptic number.

1101403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101403 is an equidigital number, since it uses as much as digits as its factorization.

1101403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1101403 is about 1049.4774890392. The cubic root of 1101403 is about 103.2718804455.

Adding to 1101403 its reverse (3041011), we get a palindrome (4142414).

The spelling of 1101403 in words is "one million, one hundred one thousand, four hundred three".