1312831255 has 8 divisors (see below), whose sum is σ = 1584832032. Its totient is φ = 1043975328.

The previous prime is 1312831249. The next prime is 1312831259. The reversal of 1312831255 is 5521382131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1312831255 - 2⁷ = 1312831127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312831259) 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, 785292 + ... + 786961.

It is an arithmetic number, because the mean of its divisors is an integer number (198104004).

Almost surely, 2^1312831255 is an apocalyptic number.

1312831255 is a deficient number, since it is larger than the sum of its proper divisors (272000777).

1312831255 is a wasteful number, since it uses less digits than its factorization.

1312831255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1572425.

The product of its digits is 7200, while the sum is 31.

The square root of 1312831255 is about 36233.0133303870. The cubic root of 1312831255 is about 1094.9718875486.

The spelling of 1312831255 in words is "one billion, three hundred twelve million, eight hundred thirty-one thousand, two hundred fifty-five".