1315140240 has 40 divisors (see below), whose sum is σ = 4076935488. Its totient is φ = 350704000.

The previous prime is 1315140223. The next prime is 1315140287. The reversal of 1315140240 is 420415131.

It is a tau number, because it is divible by the number of its divisors (40).

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, 2739636 + ... + 2740115.

Almost surely, 2^1315140240 is an apocalyptic number.

1315140240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1315140240 is an abundant number, since it is smaller than the sum of its proper divisors (2761795248).

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

1315140240 is a wasteful number, since it uses less digits than its factorization.

1315140240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5479767 (or 5479761 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1315140240 is about 36264.8623325665. The cubic root of 1315140240 is about 1095.6134508043.

Adding to 1315140240 its reverse (420415131), we get a palindrome (1735555371).

The spelling of 1315140240 in words is "one billion, three hundred fifteen million, one hundred forty thousand, two hundred forty".