1331230259 has 2 divisors, whose sum is σ = 1331230260. Its totient is φ = 1331230258.

The previous prime is 1331230211. The next prime is 1331230261. The reversal of 1331230259 is 9520321331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1331230259 - 2¹² = 1331226163 is a prime.

Together with 1331230261, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1331280259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665615129 + 665615130.

It is an arithmetic number, because the mean of its divisors is an integer number (665615130).

Almost surely, 2^1331230259 is an apocalyptic number.

1331230259 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331230259 is an equidigital number, since it uses as much as digits as its factorization.

1331230259 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 1331230259 is about 36486.0282711067. The cubic root of 1331230259 is about 1100.0634285739.

The spelling of 1331230259 in words is "one billion, three hundred thirty-one million, two hundred thirty thousand, two hundred fifty-nine".