1312809051 has 8 divisors (see below), whose sum is σ = 1762160400. Its totient is φ = 869331872.

The previous prime is 1312809031. The next prime is 1312809073. The reversal of 1312809051 is 1509082131.

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 1312809051 - 2⁷ = 1312808923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1312809011) 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, 1468020 + ... + 1468913.

It is an arithmetic number, because the mean of its divisors is an integer number (220270050).

Almost surely, 2^1312809051 is an apocalyptic number.

1312809051 is a deficient number, since it is larger than the sum of its proper divisors (449351349).

1312809051 is a wasteful number, since it uses less digits than its factorization.

1312809051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2937085.

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 1312809051 is about 36232.7069234414. The cubic root of 1312809051 is about 1094.9657144037.

The spelling of 1312809051 in words is "one billion, three hundred twelve million, eight hundred nine thousand, fifty-one".