1312222319 has 8 divisors (see below), whose sum is σ = 1333720080. Its totient is φ = 1290874816.

The previous prime is 1312222313. The next prime is 1312222337. The reversal of 1312222319 is 9132222131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1312222319 - 2⁸ = 1312222063 is a prime.

It is a super-2 number, since 2×1312222319² = 3443854828963475522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312222313) 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 7 ways as a sum of consecutive naturals, for example, 19889 + ... + 54954.

It is an arithmetic number, because the mean of its divisors is an integer number (166715010).

Almost surely, 2^1312222319 is an apocalyptic number.

1312222319 is a deficient number, since it is larger than the sum of its proper divisors (21497761).

1312222319 is an equidigital number, since it uses as much as digits as its factorization.

1312222319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75129.

The product of its digits is 1296, while the sum is 26.

The square root of 1312222319 is about 36224.6093008607. The cubic root of 1312222319 is about 1094.8025662401.

The spelling of 1312222319 in words is "one billion, three hundred twelve million, two hundred twenty-two thousand, three hundred nineteen".