19313000 has 128 divisors (see below), whose sum is σ = 53913600. Its totient is φ = 6336000.

The previous prime is 19312973. The next prime is 19313011. The reversal of 19313000 is 31391.

It is a self number, because there is not a number n which added to its sum of digits gives 19313000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 216956 + ... + 217044.

It is an arithmetic number, because the mean of its divisors is an integer number (421200).

Almost surely, 2^19313000 is an apocalyptic number.

19313000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19313000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26956800).

19313000 is an abundant number, since it is smaller than the sum of its proper divisors (34600600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19313000 is a wasteful number, since it uses less digits than its factorization.

19313000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 17.

The square root of 19313000 is about 4394.6558454559. The cubic root of 19313000 is about 268.2974717280.

Adding to 19313000 its reverse (31391), we get a palindrome (19344391).

The spelling of 19313000 in words is "nineteen million, three hundred thirteen thousand".