1337731243 has 2 divisors, whose sum is σ = 1337731244. Its totient is φ = 1337731242.

The previous prime is 1337731223. The next prime is 1337731301. The reversal of 1337731243 is 3421377331.

It is a weak prime.

It is an emirp because it is prime and its reverse (3421377331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1337731243 - 2⁵ = 1337731211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1337731199 and 1337731208.

It is not a weakly prime, because it can be changed into another prime (1337731223) 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, 668865621 + 668865622.

It is an arithmetic number, because the mean of its divisors is an integer number (668865622).

Almost surely, 2^1337731243 is an apocalyptic number.

1337731243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1337731243 is an equidigital number, since it uses as much as digits as its factorization.

1337731243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31752, while the sum is 34.

The square root of 1337731243 is about 36575.0084483927. The cubic root of 1337731243 is about 1101.8512196993.

The spelling of 1337731243 in words is "one billion, three hundred thirty-seven million, seven hundred thirty-one thousand, two hundred forty-three".