1311045960 has 96 divisors (see below), whose sum is σ = 4575303360. Its totient is φ = 299666304.

The previous prime is 1311045947. The next prime is 1311045973. The reversal of 1311045960 is 695401131.

It is an interprime number because it is at equal distance from previous prime (1311045947) and next prime (1311045973).

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

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, 105604 + ... + 117363.

It is an arithmetic number, because the mean of its divisors is an integer number (47659410).

Almost surely, 2^1311045960 is an apocalyptic number.

1311045960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1311045960 is an abundant number, since it is smaller than the sum of its proper divisors (3264257400).

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

1311045960 is a wasteful number, since it uses less digits than its factorization.

1311045960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222995 (or 222984 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 1311045960 is about 36208.3686459360. The cubic root of 1311045960 is about 1094.4753183668.

The spelling of 1311045960 in words is "one billion, three hundred eleven million, forty-five thousand, nine hundred sixty".