231219383 has 2 divisors, whose sum is σ = 231219384. Its totient is φ = 231219382.

The previous prime is 231219361. The next prime is 231219389. The reversal of 231219383 is 383912132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231219383 - 2⁶ = 231219319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231219389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115609691 + 115609692.

It is an arithmetic number, because the mean of its divisors is an integer number (115609692).

Almost surely, 2^231219383 is an apocalyptic number.

231219383 is a deficient number, since it is larger than the sum of its proper divisors (1).

231219383 is an equidigital number, since it uses as much as digits as its factorization.

231219383 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 32.

The square root of 231219383 is about 15205.8996116639. The cubic root of 231219383 is about 613.7734232802.

The spelling of 231219383 in words is "two hundred thirty-one million, two hundred nineteen thousand, three hundred eighty-three".