1280313375 has 32 divisors (see below), whose sum is σ = 2324125440. Its totient is φ = 620756000.

The previous prime is 1280313371. The next prime is 1280313383. The reversal of 1280313375 is 5733130821.

It is not a de Polignac number, because 1280313375 - 2² = 1280313371 is a prime.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1280313371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 151065 + ... + 159314.

It is an arithmetic number, because the mean of its divisors is an integer number (72628920).

Almost surely, 2^1280313375 is an apocalyptic number.

1280313375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1280313375 is a deficient number, since it is larger than the sum of its proper divisors (1043812065).

1280313375 is a wasteful number, since it uses less digits than its factorization.

1280313375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310408 (or 310398 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 1280313375 is about 35781.4669207398. The cubic root of 1280313375 is about 1085.8556467642.

The spelling of 1280313375 in words is "one billion, two hundred eighty million, three hundred thirteen thousand, three hundred seventy-five".