9920300231 has 2 divisors, whose sum is σ = 9920300232. Its totient is φ = 9920300230.

The previous prime is 9920300227. The next prime is 9920300237. The reversal of 9920300231 is 1320030299.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9920300231 - 2² = 9920300227 is a prime.

It is a super-2 number, since 2×9920300231² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9920300194 and 9920300203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9920300237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4960150115 + 4960150116.

It is an arithmetic number, because the mean of its divisors is an integer number (4960150116).

Almost surely, 2^9920300231 is an apocalyptic number.

9920300231 is a deficient number, since it is larger than the sum of its proper divisors (1).

9920300231 is an equidigital number, since it uses as much as digits as its factorization.

9920300231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 9920300231 is about 99600.7039683957. The cubic root of 9920300231 is about 2148.6958184591.

The spelling of 9920300231 in words is "nine billion, nine hundred twenty million, three hundred thousand, two hundred thirty-one".