1317421431 has 6 divisors (see below), whose sum is σ = 1902942080. Its totient is φ = 878280948.

The previous prime is 1317421423. The next prime is 1317421433. The reversal of 1317421431 is 1341247131.

It is not a de Polignac number, because 1317421431 - 2³ = 1317421423 is a prime.

It is a super-2 number, since 2×1317421431² = 3471198453716175522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1317421395 and 1317421404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317421433) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73190071 + ... + 73190088.

Almost surely, 2^1317421431 is an apocalyptic number.

1317421431 is a deficient number, since it is larger than the sum of its proper divisors (585520649).

1317421431 is a wasteful number, since it uses less digits than its factorization.

1317421431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146380165 (or 146380162 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 1317421431 is about 36296.3005139642. The cubic root of 1317421431 is about 1096.2465543556.

Adding to 1317421431 its reverse (1341247131), we get a palindrome (2658668562).

The spelling of 1317421431 in words is "one billion, three hundred seventeen million, four hundred twenty-one thousand, four hundred thirty-one".