1311430280 has 32 divisors (see below), whose sum is σ = 2952288000. Its totient is φ = 524293056.

The previous prime is 1311430273. The next prime is 1311430283. The reversal of 1311430280 is 820341131.

It is not an unprimeable number, because it can be changed into a prime (1311430283) 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, 78071 + ... + 93369.

It is an arithmetic number, because the mean of its divisors is an integer number (92259000).

Almost surely, 2^1311430280 is an apocalyptic number.

1311430280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1311430280 is an abundant number, since it is smaller than the sum of its proper divisors (1640857720).

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

1311430280 is a wasteful number, since it uses less digits than its factorization.

1311430280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17453 (or 17449 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 1311430280 is about 36213.6753174819. The cubic root of 1311430280 is about 1094.5822527466.

The spelling of 1311430280 in words is "one billion, three hundred eleven million, four hundred thirty thousand, two hundred eighty".