1403121263 has 2 divisors, whose sum is σ = 1403121264. Its totient is φ = 1403121262.

The previous prime is 1403121259. The next prime is 1403121301. The reversal of 1403121263 is 3621213041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1403121263 - 2² = 1403121259 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1403121563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 701560631 + 701560632.

It is an arithmetic number, because the mean of its divisors is an integer number (701560632).

Almost surely, 2^1403121263 is an apocalyptic number.

1403121263 is a deficient number, since it is larger than the sum of its proper divisors (1).

1403121263 is an equidigital number, since it uses as much as digits as its factorization.

1403121263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1403121263 is about 37458.2602772740. The cubic root of 1403121263 is about 1119.5196874890.

The spelling of 1403121263 in words is "one billion, four hundred three million, one hundred twenty-one thousand, two hundred sixty-three".