1313205255 has 24 divisors (see below), whose sum is σ = 2313542400. Its totient is φ = 688893120.

The previous prime is 1313205253. The next prime is 1313205259. The reversal of 1313205255 is 5525023131.

It is a happy number.

1313205255 is a `hidden beast` number, since 1 + 3 + 132 + 0 + 525 + 5 = 666.

It is not a de Polignac number, because 1313205255 - 2¹ = 1313205253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313205253) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 236455 + ... + 241944.

It is an arithmetic number, because the mean of its divisors is an integer number (96397600).

Almost surely, 2^1313205255 is an apocalyptic number.

1313205255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1313205255 is a deficient number, since it is larger than the sum of its proper divisors (1000337145).

1313205255 is a wasteful number, since it uses less digits than its factorization.

1313205255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478471 (or 478468 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 1313205255 is about 36238.1740020106. The cubic root of 1313205255 is about 1095.0758563825.

Adding to 1313205255 its reverse (5525023131), we get a palindrome (6838228386).

The spelling of 1313205255 in words is "one billion, three hundred thirteen million, two hundred five thousand, two hundred fifty-five".