1316262540 has 24 divisors (see below), whose sum is σ = 3685535280. Its totient is φ = 351003328.

The previous prime is 1316262523. The next prime is 1316262547. The reversal of 1316262540 is 452626131.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1316262498 and 1316262507.

It is not an unprimeable number, because it can be changed into a prime (1316262547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10968795 + ... + 10968914.

It is an arithmetic number, because the mean of its divisors is an integer number (153563970).

Almost surely, 2^1316262540 is an apocalyptic number.

1316262540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1316262540 is an abundant number, since it is smaller than the sum of its proper divisors (2369272740).

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

1316262540 is a wasteful number, since it uses less digits than its factorization.

1316262540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21937721 (or 21937719 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 1316262540 is about 36280.3326886620. The cubic root of 1316262540 is about 1095.9250164038.

Adding to 1316262540 its reverse (452626131), we get a palindrome (1768888671).

The spelling of 1316262540 in words is "one billion, three hundred sixteen million, two hundred sixty-two thousand, five hundred forty".