1312552805 has 8 divisors (see below), whose sum is σ = 1575839232. Its totient is φ = 1049525008.

The previous prime is 1312552783. The next prime is 1312552807. The reversal of 1312552805 is 5082552131.

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 1312552805 - 2²⁴ = 1295775589 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 (1312552807) 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, 53309 + ... + 73938.

It is an arithmetic number, because the mean of its divisors is an integer number (196979904).

Almost surely, 2^1312552805 is an apocalyptic number.

It is an amenable number.

1312552805 is a deficient number, since it is larger than the sum of its proper divisors (263286427).

1312552805 is a wasteful number, since it uses less digits than its factorization.

1312552805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129315.

The product of its (nonzero) digits is 12000, while the sum is 32.

The square root of 1312552805 is about 36229.1706363808. The cubic root of 1312552805 is about 1094.8944679819.

The spelling of 1312552805 in words is "one billion, three hundred twelve million, five hundred fifty-two thousand, eight hundred five".