1312255073 has 4 divisors (see below), whose sum is σ = 1317745920. Its totient is φ = 1306764228.

The previous prime is 1312255067. The next prime is 1312255093. The reversal of 1312255073 is 3705522131.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3705522131 = 5641 ⋅656891.

It is a cyclic number.

It is not a de Polignac number, because 1312255073 - 2¹⁰ = 1312254049 is a prime.

It is a super-2 number, since 2×1312255073² = 3444026753228470658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312255093) 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, 2745065 + ... + 2745542.

It is an arithmetic number, because the mean of its divisors is an integer number (329436480).

Almost surely, 2^1312255073 is an apocalyptic number.

It is an amenable number.

1312255073 is a deficient number, since it is larger than the sum of its proper divisors (5490847).

1312255073 is an equidigital number, since it uses as much as digits as its factorization.

1312255073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5490846.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 1312255073 is about 36225.0613940128. The cubic root of 1312255073 is about 1094.8116751806.

The spelling of 1312255073 in words is "one billion, three hundred twelve million, two hundred fifty-five thousand, seventy-three".