1312051677 has 4 divisors (see below), whose sum is σ = 1749402240. Its totient is φ = 874701116.

The previous prime is 1312051661. The next prime is 1312051681. The reversal of 1312051677 is 7761502131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1312051677 - 2⁴ = 1312051661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312051627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218675277 + ... + 218675282.

It is an arithmetic number, because the mean of its divisors is an integer number (437350560).

Almost surely, 2^1312051677 is an apocalyptic number.

It is an amenable number.

1312051677 is a deficient number, since it is larger than the sum of its proper divisors (437350563).

1312051677 is an equidigital number, since it uses as much as digits as its factorization.

1312051677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437350562.

The product of its (nonzero) digits is 8820, while the sum is 33.

The square root of 1312051677 is about 36222.2538917721. The cubic root of 1312051677 is about 1094.7551079714.

The spelling of 1312051677 in words is "one billion, three hundred twelve million, fifty-one thousand, six hundred seventy-seven".