1317090432 has 64 divisors (see below), whose sum is σ = 3998318400. Its totient is φ = 376310784.

The previous prime is 1317090421. The next prime is 1317090461. The reversal of 1317090432 is 2340907131.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 1317090432.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242307 + ... + 247682.

It is an arithmetic number, because the mean of its divisors is an integer number (62473725).

Almost surely, 2^1317090432 is an apocalyptic number.

1317090432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1317090432 is an abundant number, since it is smaller than the sum of its proper divisors (2681227968).

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

1317090432 is an equidigital number, since it uses as much as digits as its factorization.

1317090432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490013 (or 490001 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 1317090432 is about 36291.7405479539. The cubic root of 1317090432 is about 1096.1547368861.

Adding to 1317090432 its reverse (2340907131), we get a palindrome (3657997563).

The spelling of 1317090432 in words is "one billion, three hundred seventeen million, ninety thousand, four hundred thirty-two".