40223212231 has 2 divisors, whose sum is σ = 40223212232. Its totient is φ = 40223212230.

The previous prime is 40223212229. The next prime is 40223212243. The reversal of 40223212231 is 13221232204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40223212231 - 2¹ = 40223212229 is a prime.

It is a super-2 number, since 2×40223212231² (a number of 22 digits) contains 22 as substring.

Together with 40223212229, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40223212261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20111606115 + 20111606116.

It is an arithmetic number, because the mean of its divisors is an integer number (20111606116).

Almost surely, 2^40223212231 is an apocalyptic number.

40223212231 is a deficient number, since it is larger than the sum of its proper divisors (1).

40223212231 is an equidigital number, since it uses as much as digits as its factorization.

40223212231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 40223212231 its reverse (13221232204), we get a palindrome (53444444435).

The spelling of 40223212231 in words is "forty billion, two hundred twenty-three million, two hundred twelve thousand, two hundred thirty-one".