1248631339 has 2 divisors, whose sum is σ = 1248631340. Its totient is φ = 1248631338.

The previous prime is 1248631309. The next prime is 1248631357. The reversal of 1248631339 is 9331368421.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1248631339 - 2¹³ = 1248623147 is a prime.

It is not a weakly prime, because it can be changed into another prime (1248631309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624315669 + 624315670.

It is an arithmetic number, because the mean of its divisors is an integer number (624315670).

Almost surely, 2^1248631339 is an apocalyptic number.

1248631339 is a deficient number, since it is larger than the sum of its proper divisors (1).

1248631339 is an equidigital number, since it uses as much as digits as its factorization.

1248631339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 40.

The square root of 1248631339 is about 35335.9779686370. The cubic root of 1248631339 is about 1076.8240426700.

The spelling of 1248631339 in words is "one billion, two hundred forty-eight million, six hundred thirty-one thousand, three hundred thirty-nine".