1331422403 has 2 divisors, whose sum is σ = 1331422404. Its totient is φ = 1331422402.

The previous prime is 1331422369. The next prime is 1331422409. The reversal of 1331422403 is 3042241331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1331422403 - 2¹⁰ = 1331421379 is a prime.

It is not a weakly prime, because it can be changed into another prime (1331422409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665711201 + 665711202.

It is an arithmetic number, because the mean of its divisors is an integer number (665711202).

Almost surely, 2^1331422403 is an apocalyptic number.

1331422403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331422403 is an equidigital number, since it uses as much as digits as its factorization.

1331422403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 1331422403 is about 36488.6612936128. The cubic root of 1331422403 is about 1100.1163521553.

Adding to 1331422403 its reverse (3042241331), we get a palindrome (4373663734).

The spelling of 1331422403 in words is "one billion, three hundred thirty-one million, four hundred twenty-two thousand, four hundred three".