8121319 has 2 divisors, whose sum is σ = 8121320. Its totient is φ = 8121318.

The previous prime is 8121307. The next prime is 8121331. The reversal of 8121319 is 9131218.

It is a balanced prime because it is at equal distance from previous prime (8121307) and next prime (8121331).

It is a cyclic number.

It is not a de Polignac number, because 8121319 - 2⁹ = 8120807 is a prime.

It is a super-2 number, since 2×8121319² = 131911644599522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8121293 and 8121302.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8121119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4060659 + 4060660.

It is an arithmetic number, because the mean of its divisors is an integer number (4060660).

Almost surely, 2^8121319 is an apocalyptic number.

8121319 is a deficient number, since it is larger than the sum of its proper divisors (1).

8121319 is an equidigital number, since it uses as much as digits as its factorization.

8121319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 25.

The square root of 8121319 is about 2849.7927994856. The cubic root of 8121319 is about 201.0059237712.

The spelling of 8121319 in words is "eight million, one hundred twenty-one thousand, three hundred nineteen".