19310147 has 4 divisors (see below), whose sum is σ = 20446056. Its totient is φ = 18174240.

The previous prime is 19310129. The next prime is 19310149. The reversal of 19310147 is 74101391.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 19310147 - 2¹² = 19306051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19310149) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 567929 + ... + 567962.

It is an arithmetic number, because the mean of its divisors is an integer number (5111514).

Almost surely, 2^19310147 is an apocalyptic number.

19310147 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

19310147 is a deficient number, since it is larger than the sum of its proper divisors (1135909).

19310147 is a wasteful number, since it uses less digits than its factorization.

19310147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135908.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 19310147 is about 4394.3312346704. The cubic root of 19310147 is about 268.2842597226.

The spelling of 19310147 in words is "nineteen million, three hundred ten thousand, one hundred forty-seven".