1317506011 has 2 divisors, whose sum is σ = 1317506012. Its totient is φ = 1317506010.

The previous prime is 1317506009. The next prime is 1317506039. The reversal of 1317506011 is 1106057131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1317506011 - 2¹ = 1317506009 is a prime.

It is a super-2 number, since 2×1317506011² = 3471644178042264242, which contains 22 as substring.

Together with 1317506009, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1317506041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658753005 + 658753006.

It is an arithmetic number, because the mean of its divisors is an integer number (658753006).

Almost surely, 2^1317506011 is an apocalyptic number.

1317506011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1317506011 is an equidigital number, since it uses as much as digits as its factorization.

1317506011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 1317506011 is about 36297.4656277818. The cubic root of 1317506011 is about 1096.2700139582.

The spelling of 1317506011 in words is "one billion, three hundred seventeen million, five hundred six thousand, eleven".