1931338823 has 2 divisors, whose sum is σ = 1931338824. Its totient is φ = 1931338822.

The previous prime is 1931338807. The next prime is 1931338831. The reversal of 1931338823 is 3288331391.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1931338823 - 2⁴ = 1931338807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1931338883) by changing a digit.

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 as a sum of consecutive naturals, namely, 965669411 + 965669412.

It is an arithmetic number, because the mean of its divisors is an integer number (965669412).

Almost surely, 2^1931338823 is an apocalyptic number.

1931338823 is a deficient number, since it is larger than the sum of its proper divisors (1).

1931338823 is an equidigital number, since it uses as much as digits as its factorization.

1931338823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 41.

The square root of 1931338823 is about 43947.0001592828. Note that the first 3 decimals coincide. The cubic root of 1931338823 is about 1245.3348933230.

The spelling of 1931338823 in words is "one billion, nine hundred thirty-one million, three hundred thirty-eight thousand, eight hundred twenty-three".