1331280259 has 2 divisors, whose sum is σ = 1331280260. Its totient is φ = 1331280258.

The previous prime is 1331280241. The next prime is 1331280281. The reversal of 1331280259 is 9520821331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1331280259 - 2²³ = 1322891651 is a prime.

It is not a weakly prime, because it can be changed into another prime (1331280359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665640129 + 665640130.

It is an arithmetic number, because the mean of its divisors is an integer number (665640130).

Almost surely, 2^1331280259 is an apocalyptic number.

1331280259 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331280259 is an equidigital number, since it uses as much as digits as its factorization.

1331280259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 1331280259 is about 36486.7134584632. The cubic root of 1331280259 is about 1100.0772009178.

The spelling of 1331280259 in words is "one billion, three hundred thirty-one million, two hundred eighty thousand, two hundred fifty-nine".