40323211205213 has 2 divisors, whose sum is σ = 40323211205214. Its totient is φ = 40323211205212.

The previous prime is 40323211205191. The next prime is 40323211205243. The reversal of 40323211205213 is 31250211232304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22242712223524 + 18080498981689 = 4716218^2 + 4252117^2 .

It is a cyclic number.

It is not a de Polignac number, because 40323211205213 - 2²² = 40323207010909 is a prime.

It is a super-2 number, since 2×40323211205213² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40323211205243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20161605602606 + 20161605602607.

It is an arithmetic number, because the mean of its divisors is an integer number (20161605602607).

Almost surely, 2^{40323211205213} is an apocalyptic number.

It is an amenable number.

40323211205213 is a deficient number, since it is larger than the sum of its proper divisors (1).

40323211205213 is an equidigital number, since it uses as much as digits as its factorization.

40323211205213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 40323211205213 its reverse (31250211232304), we get a palindrome (71573422437517).

The spelling of 40323211205213 in words is "forty trillion, three hundred twenty-three billion, two hundred eleven million, two hundred five thousand, two hundred thirteen".