1312657355 has 8 divisors (see below), whose sum is σ = 1576875552. Its totient is φ = 1049001408.

The previous prime is 1312657349. The next prime is 1312657361. The reversal of 1312657355 is 5537562131.

It is an interprime number because it is at equal distance from previous prime (1312657349) and next prime (1312657361).

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 1312657355 - 2¹² = 1312653259 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135407 + ... + 144776.

It is an arithmetic number, because the mean of its divisors is an integer number (197109444).

Almost surely, 2^1312657355 is an apocalyptic number.

1312657355 is a deficient number, since it is larger than the sum of its proper divisors (264218197).

1312657355 is an equidigital number, since it uses as much as digits as its factorization.

1312657355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281125.

The product of its digits is 94500, while the sum is 38.

The square root of 1312657355 is about 36230.6135057081. The cubic root of 1312657355 is about 1094.9235380955.

The spelling of 1312657355 in words is "one billion, three hundred twelve million, six hundred fifty-seven thousand, three hundred fifty-five".