1315431118 has 16 divisors (see below), whose sum is σ = 1985389056. Its totient is φ = 653647840.

The previous prime is 1315431109. The next prime is 1315431149. The reversal of 1315431118 is 8111345131.

It is a congruent number.

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, 221508 + ... + 227368.

It is an arithmetic number, because the mean of its divisors is an integer number (124086816).

Almost surely, 2^1315431118 is an apocalyptic number.

1315431118 is a deficient number, since it is larger than the sum of its proper divisors (669957938).

1315431118 is a wasteful number, since it uses less digits than its factorization.

1315431118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6539.

The product of its digits is 1440, while the sum is 28.

The square root of 1315431118 is about 36268.8725769081. The cubic root of 1315431118 is about 1095.6942194673.

Adding to 1315431118 its reverse (8111345131), we get a palindrome (9426776249).

The spelling of 1315431118 in words is "one billion, three hundred fifteen million, four hundred thirty-one thousand, one hundred eighteen".