128345319 has 12 divisors (see below), whose sum is σ = 186617392. Its totient is φ = 84996000.

The previous prime is 128345309. The next prime is 128345333. The reversal of 128345319 is 913543821.

It is not a de Polignac number, because 128345319 - 2¹² = 128341223 is a prime.

It is a super-2 number, since 2×128345319² = 32945041818423522, 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 (128345309) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45862 + ... + 48579.

Almost surely, 2^128345319 is an apocalyptic number.

128345319 is a deficient number, since it is larger than the sum of its proper divisors (58272073).

128345319 is a wasteful number, since it uses less digits than its factorization.

128345319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94598 (or 94595 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 128345319 is about 11328.9593078976. The cubic root of 128345319 is about 504.4212158054.

The spelling of 128345319 in words is "one hundred twenty-eight million, three hundred forty-five thousand, three hundred nineteen".