9783131923 has 2 divisors, whose sum is σ = 9783131924. Its totient is φ = 9783131922.

The previous prime is 9783131887. The next prime is 9783131929. The reversal of 9783131923 is 3291313879.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9783131923 - 2²⁵ = 9749577491 is a prime.

It is not a weakly prime, because it can be changed into another prime (9783131929) 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, 4891565961 + 4891565962.

It is an arithmetic number, because the mean of its divisors is an integer number (4891565962).

Almost surely, 2^9783131923 is an apocalyptic number.

9783131923 is a deficient number, since it is larger than the sum of its proper divisors (1).

9783131923 is an equidigital number, since it uses as much as digits as its factorization.

9783131923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 46.

The square root of 9783131923 is about 98909.7160192061. The cubic root of 9783131923 is about 2138.7464579723.

The spelling of 9783131923 in words is "nine billion, seven hundred eighty-three million, one hundred thirty-one thousand, nine hundred twenty-three".