1312255223 has 4 divisors (see below), whose sum is σ = 1313063400. Its totient is φ = 1311447048.

The previous prime is 1312255199. The next prime is 1312255247. The reversal of 1312255223 is 3225522131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1312255199) and next prime (1312255247).

It is a cyclic number.

It is not a de Polignac number, because 1312255223 - 2¹⁴ = 1312238839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1312255192 and 1312255201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312257223) 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, 401648 + ... + 404901.

It is an arithmetic number, because the mean of its divisors is an integer number (328265850).

Almost surely, 2^1312255223 is an apocalyptic number.

1312255223 is a deficient number, since it is larger than the sum of its proper divisors (808177).

1312255223 is an equidigital number, since it uses as much as digits as its factorization.

1312255223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808176.

The product of its digits is 3600, while the sum is 26.

The square root of 1312255223 is about 36225.0634644027. The cubic root of 1312255223 is about 1094.8117168954.

Adding to 1312255223 its reverse (3225522131), we get a palindrome (4537777354).

The spelling of 1312255223 in words is "one billion, three hundred twelve million, two hundred fifty-five thousand, two hundred twenty-three".