1321297463 has 2 divisors, whose sum is σ = 1321297464. Its totient is φ = 1321297462.

The previous prime is 1321297457. The next prime is 1321297489. The reversal of 1321297463 is 3647921231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1321297463 - 2¹⁸ = 1321035319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1321297063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660648731 + 660648732.

It is an arithmetic number, because the mean of its divisors is an integer number (660648732).

Almost surely, 2^1321297463 is an apocalyptic number.

1321297463 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321297463 is an equidigital number, since it uses as much as digits as its factorization.

1321297463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 38.

The square root of 1321297463 is about 36349.6556104731. The cubic root of 1321297463 is about 1097.3206035787.

The spelling of 1321297463 in words is "one billion, three hundred twenty-one million, two hundred ninety-seven thousand, four hundred sixty-three".