1923994231 has 2 divisors, whose sum is σ = 1923994232. Its totient is φ = 1923994230.

The previous prime is 1923994223. The next prime is 1923994243. The reversal of 1923994231 is 1324993291.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1923994231 - 2³ = 1923994223 is a prime.

It is a super-2 number, since 2×1923994231² = 7403507601842562722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1923994211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 961997115 + 961997116.

It is an arithmetic number, because the mean of its divisors is an integer number (961997116).

Almost surely, 2^1923994231 is an apocalyptic number.

1923994231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1923994231 is an equidigital number, since it uses as much as digits as its factorization.

1923994231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 104976, while the sum is 43.

The square root of 1923994231 is about 43863.3586379338. The cubic root of 1923994231 is about 1243.7542807156.

The spelling of 1923994231 in words is "one billion, nine hundred twenty-three million, nine hundred ninety-four thousand, two hundred thirty-one".