1312223319 has 24 divisors (see below), whose sum is σ = 2189380752. Its totient is φ = 748504320.

The previous prime is 1312223317. The next prime is 1312223321. The reversal of 1312223319 is 9133222131.

It is an interprime number because it is at equal distance from previous prime (1312223317) and next prime (1312223321).

It is not a de Polignac number, because 1312223319 - 2¹ = 1312223317 is a prime.

It is a super-2 number, since 2×1312223319² = 3443860077854751522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1312223292 and 1312223301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312223317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 388164 + ... + 391529.

It is an arithmetic number, because the mean of its divisors is an integer number (91224198).

Almost surely, 2^1312223319 is an apocalyptic number.

1312223319 is a deficient number, since it is larger than the sum of its proper divisors (877157433).

1312223319 is a wasteful number, since it uses less digits than its factorization.

1312223319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779727 (or 779724 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 1312223319 is about 36224.6231036294. The cubic root of 1312223319 is about 1094.8028443440.

The spelling of 1312223319 in words is "one billion, three hundred twelve million, two hundred twenty-three thousand, three hundred nineteen".