1281315254 has 16 divisors (see below), whose sum is σ = 1975043616. Its totient is φ = 622987200.

The previous prime is 1281315253. The next prime is 1281315271. The reversal of 1281315254 is 4525131821.

It is a self number, because there is not a number n which added to its sum of digits gives 1281315254.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1281315251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164999 + ... + 172589.

It is an arithmetic number, because the mean of its divisors is an integer number (123440226).

Almost surely, 2^1281315254 is an apocalyptic number.

1281315254 is a deficient number, since it is larger than the sum of its proper divisors (693728362).

1281315254 is a wasteful number, since it uses less digits than its factorization.

1281315254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9911.

The product of its digits is 9600, while the sum is 32.

The square root of 1281315254 is about 35795.4641539958. The cubic root of 1281315254 is about 1086.1388098150.

The spelling of 1281315254 in words is "one billion, two hundred eighty-one million, three hundred fifteen thousand, two hundred fifty-four".