1312772783 has 32 divisors (see below), whose sum is σ = 1588224000. Its totient is φ = 1061424000.

The previous prime is 1312772777. The next prime is 1312772803. The reversal of 1312772783 is 3872772131.

It is a happy number.

It is not a de Polignac number, because 1312772783 - 2⁴ = 1312772767 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1312772783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312772723) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1747658 + ... + 1748408.

It is an arithmetic number, because the mean of its divisors is an integer number (49632000).

Almost surely, 2^1312772783 is an apocalyptic number.

1312772783 is a deficient number, since it is larger than the sum of its proper divisors (275451217).

1312772783 is a wasteful number, since it uses less digits than its factorization.

1312772783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975.

The product of its digits is 98784, while the sum is 41.

The square root of 1312772783 is about 36232.2064329513. The cubic root of 1312772783 is about 1094.9556310428.

The spelling of 1312772783 in words is "one billion, three hundred twelve million, seven hundred seventy-two thousand, seven hundred eighty-three".