1287322403 has 2 divisors, whose sum is σ = 1287322404. Its totient is φ = 1287322402.

The previous prime is 1287322349. The next prime is 1287322417. The reversal of 1287322403 is 3042237821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1287322403 - 2¹⁴ = 1287306019 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1287322403.

It is not a weakly prime, because it can be changed into another prime (1287322483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 643661201 + 643661202.

It is an arithmetic number, because the mean of its divisors is an integer number (643661202).

Almost surely, 2^1287322403 is an apocalyptic number.

1287322403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1287322403 is an equidigital number, since it uses as much as digits as its factorization.

1287322403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 1287322403 is about 35879.2753968081. The cubic root of 1287322403 is about 1087.8335339837.

The spelling of 1287322403 in words is "one billion, two hundred eighty-seven million, three hundred twenty-two thousand, four hundred three".