40230320231 has 2 divisors, whose sum is σ = 40230320232. Its totient is φ = 40230320230.

The previous prime is 40230320203. The next prime is 40230320233. The reversal of 40230320231 is 13202303204.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40230320231 is a prime.

It is a super-2 number, since 2×40230320231² (a number of 22 digits) contains 22 as substring.

Together with 40230320233, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40230320233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20115160115 + 20115160116.

It is an arithmetic number, because the mean of its divisors is an integer number (20115160116).

Almost surely, 2^40230320231 is an apocalyptic number.

40230320231 is a deficient number, since it is larger than the sum of its proper divisors (1).

40230320231 is an equidigital number, since it uses as much as digits as its factorization.

40230320231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 40230320231 its reverse (13202303204), we get a palindrome (53432623435).

The spelling of 40230320231 in words is "forty billion, two hundred thirty million, three hundred twenty thousand, two hundred thirty-one".