1307306491 has 2 divisors, whose sum is σ = 1307306492. Its totient is φ = 1307306490.

The previous prime is 1307306489. The next prime is 1307306513. The reversal of 1307306491 is 1946037031.

It is a weak prime.

It is an emirp because it is prime and its reverse (1946037031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1307306491 - 2¹ = 1307306489 is a prime.

It is a super-2 number, since 2×1307306491² = 3418100522821466162, which contains 22 as substring.

Together with 1307306489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1307306401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 653653245 + 653653246.

It is an arithmetic number, because the mean of its divisors is an integer number (653653246).

Almost surely, 2^1307306491 is an apocalyptic number.

1307306491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1307306491 is an equidigital number, since it uses as much as digits as its factorization.

1307306491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 1307306491 is about 36156.6935850058. The cubic root of 1307306491 is about 1093.4337444238.

The spelling of 1307306491 in words is "one billion, three hundred seven million, three hundred six thousand, four hundred ninety-one".