1318534331 has 16 divisors (see below), whose sum is σ = 1436016960. Its totient is φ = 1205591040.

The previous prime is 1318534319. The next prime is 1318534361. The reversal of 1318534331 is 1334358131.

It is not a de Polignac number, because 1318534331 - 2¹⁸ = 1318272187 is a prime.

It is a super-2 number, since 2×1318534331² = 3477065564051235122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1318534361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 576911 + ... + 579191.

It is an arithmetic number, because the mean of its divisors is an integer number (89751060).

Almost surely, 2^1318534331 is an apocalyptic number.

1318534331 is a deficient number, since it is larger than the sum of its proper divisors (117482629).

1318534331 is a wasteful number, since it uses less digits than its factorization.

1318534331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3254.

The product of its digits is 12960, while the sum is 32.

The square root of 1318534331 is about 36311.6280411661. The cubic root of 1318534331 is about 1096.5551545208. Note that the first 3 decimals are identical.

The spelling of 1318534331 in words is "one billion, three hundred eighteen million, five hundred thirty-four thousand, three hundred thirty-one".