1295813723 has 4 divisors (see below), whose sum is σ = 1296633888. Its totient is φ = 1294993560.

The previous prime is 1295813719. The next prime is 1295813777. The reversal of 1295813723 is 3273185921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3273185921 = 12239 ⋅267439.

It is a cyclic number.

It is not a de Polignac number, because 1295813723 - 2² = 1295813719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1295813713) 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, 407708 + ... + 410873.

It is an arithmetic number, because the mean of its divisors is an integer number (324158472).

Almost surely, 2^1295813723 is an apocalyptic number.

1295813723 is a deficient number, since it is larger than the sum of its proper divisors (820165).

1295813723 is an equidigital number, since it uses as much as digits as its factorization.

1295813723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820164.

The product of its digits is 90720, while the sum is 41.

The square root of 1295813723 is about 35997.4127264724. The cubic root of 1295813723 is about 1090.2201174290.

The spelling of 1295813723 in words is "one billion, two hundred ninety-five million, eight hundred thirteen thousand, seven hundred twenty-three".