1312850653 has 4 divisors (see below), whose sum is σ = 1390077180. Its totient is φ = 1235624128.

The previous prime is 1312850647. The next prime is 1312850663. The reversal of 1312850653 is 3560582131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3560582131 = 3533 ⋅1007807.

It can be written as a sum of positive squares in 2 ways, for example, as 461261529 + 851589124 = 21477^2 + 29182^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312850653 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 (1312850663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38613238 + ... + 38613271.

It is an arithmetic number, because the mean of its divisors is an integer number (347519295).

Almost surely, 2^1312850653 is an apocalyptic number.

It is an amenable number.

1312850653 is a deficient number, since it is larger than the sum of its proper divisors (77226527).

1312850653 is an equidigital number, since it uses as much as digits as its factorization.

1312850653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77226526.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 1312850653 is about 36233.2810134550. The cubic root of 1312850653 is about 1094.9772805139.

The spelling of 1312850653 in words is "one billion, three hundred twelve million, eight hundred fifty thousand, six hundred fifty-three".