193391230 has 16 divisors (see below), whose sum is σ = 357513120. Its totient is φ = 75265632.

The previous prime is 193391197. The next prime is 193391249. The reversal of 193391230 is 32193391.

It is a junction number, because it is equal to n+sod(n) for n = 193391192 and 193391201.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 260970 + ... + 261709.

It is an arithmetic number, because the mean of its divisors is an integer number (22344570).

Almost surely, 2^193391230 is an apocalyptic number.

193391230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

193391230 is a deficient number, since it is larger than the sum of its proper divisors (164121890).

193391230 is a wasteful number, since it uses less digits than its factorization.

193391230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522723.

The product of its (nonzero) digits is 4374, while the sum is 31.

The square root of 193391230 is about 13906.5175367523. The cubic root of 193391230 is about 578.2898794589.

The spelling of 193391230 in words is "one hundred ninety-three million, three hundred ninety-one thousand, two hundred thirty".