1317403551 has 8 divisors (see below), whose sum is σ = 1848987520. Its totient is φ = 832044312.

The previous prime is 1317403531. The next prime is 1317403553. The reversal of 1317403551 is 1553047131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1317403551 - 2¹⁸ = 1317141407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317403553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11556115 + ... + 11556228.

It is an arithmetic number, because the mean of its divisors is an integer number (231123440).

Almost surely, 2^1317403551 is an apocalyptic number.

1317403551 is a deficient number, since it is larger than the sum of its proper divisors (531583969).

1317403551 is a wasteful number, since it uses less digits than its factorization.

1317403551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23112365.

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 1317403551 is about 36296.0542070347. The cubic root of 1317403551 is about 1096.2415949259.

The spelling of 1317403551 in words is "one billion, three hundred seventeen million, four hundred three thousand, five hundred fifty-one".