1317211026 has 32 divisors (see below), whose sum is σ = 2726336448. Its totient is φ = 423933120.

The previous prime is 1317211019. The next prime is 1317211057. The reversal of 1317211026 is 6201127131.

It is a junction number, because it is equal to n+sod(n) for n = 1317210987 and 1317211005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6436 + ... + 51728.

It is an arithmetic number, because the mean of its divisors is an integer number (85198014).

Almost surely, 2^1317211026 is an apocalyptic number.

1317211026 is an abundant number, since it is smaller than the sum of its proper divisors (1409125422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1317211026 is a wasteful number, since it uses less digits than its factorization.

1317211026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45466.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 1317211026 is about 36293.4019623402. The cubic root of 1317211026 is about 1096.1881908406.

Adding to 1317211026 its reverse (6201127131), we get a palindrome (7518338157).

The spelling of 1317211026 in words is "one billion, three hundred seventeen million, two hundred eleven thousand, twenty-six".