1315404240 has 80 divisors (see below), whose sum is σ = 4317634368. Its totient is φ = 330139648.

The previous prime is 1315404239. The next prime is 1315404241. The reversal of 1315404240 is 424045131.

It is an interprime number because it is at equal distance from previous prime (1315404239) and next prime (1315404241).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1315404240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315404241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157122 + ... + 165281.

Almost surely, 2^1315404240 is an apocalyptic number.

1315404240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1315404240 is an abundant number, since it is smaller than the sum of its proper divisors (3002230128).

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

1315404240 is a wasteful number, since it uses less digits than its factorization.

1315404240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322436 (or 322430 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 1315404240 is about 36268.5020368915. The cubic root of 1315404240 is about 1095.6867566998.

Adding to 1315404240 its reverse (424045131), we get a palindrome (1739449371).

The spelling of 1315404240 in words is "one billion, three hundred fifteen million, four hundred four thousand, two hundred forty".