9215231983 has 2 divisors, whose sum is σ = 9215231984. Its totient is φ = 9215231982.

The previous prime is 9215231903. The next prime is 9215232023. The reversal of 9215231983 is 3891325129.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9215231983 - 2⁹ = 9215231471 is a prime.

It is a super-2 number, since 2×9215231983² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9215231903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4607615991 + 4607615992.

It is an arithmetic number, because the mean of its divisors is an integer number (4607615992).

Almost surely, 2^9215231983 is an apocalyptic number.

9215231983 is a deficient number, since it is larger than the sum of its proper divisors (1).

9215231983 is an equidigital number, since it uses as much as digits as its factorization.

9215231983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 43.

The square root of 9215231983 is about 95995.9998281178. Note that the first 3 decimals coincide. The cubic root of 9215231983 is about 2096.5348737624.

The spelling of 9215231983 in words is "nine billion, two hundred fifteen million, two hundred thirty-one thousand, nine hundred eighty-three".