1312750280 has 64 divisors (see below), whose sum is σ = 3116880000. Its totient is φ = 496226304.

The previous prime is 1312750249. The next prime is 1312750301. The reversal of 1312750280 is 820572131.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 339317 + ... + 343163.

It is an arithmetic number, because the mean of its divisors is an integer number (48701250).

Almost surely, 2^1312750280 is an apocalyptic number.

1312750280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1312750280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1558440000).

1312750280 is an abundant number, since it is smaller than the sum of its proper divisors (1804129720).

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

1312750280 is a wasteful number, since it uses less digits than its factorization.

1312750280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4326 (or 4322 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 1312750280 is about 36231.8958929836. The cubic root of 1312750280 is about 1094.9493745838.

The spelling of 1312750280 in words is "one billion, three hundred twelve million, seven hundred fifty thousand, two hundred eighty".