1315155240 has 96 divisors (see below), whose sum is σ = 4884871680. Its totient is φ = 300606336.

The previous prime is 1315155229. The next prime is 1315155263. The reversal of 1315155240 is 425515131.

1315155240 is a `hidden beast` number, since 131 + 5 + 1 + 5 + 524 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 258424 + ... + 263463.

It is an arithmetic number, because the mean of its divisors is an integer number (50884080).

Almost surely, 2^1315155240 is an apocalyptic number.

1315155240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1315155240 is an abundant number, since it is smaller than the sum of its proper divisors (3569716440).

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

1315155240 is a wasteful number, since it uses less digits than its factorization.

1315155240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521911 (or 521904 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 1315155240 is about 36265.0691437366. The cubic root of 1315155240 is about 1095.6176161748.

The spelling of 1315155240 in words is "one billion, three hundred fifteen million, one hundred fifty-five thousand, two hundred forty".