40311221263 has 2 divisors, whose sum is σ = 40311221264. Its totient is φ = 40311221262.

The previous prime is 40311221233. The next prime is 40311221383. The reversal of 40311221263 is 36212211304.

40311221263 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40311221263 - 2¹³ = 40311213071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40311221213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20155610631 + 20155610632.

It is an arithmetic number, because the mean of its divisors is an integer number (20155610632).

Almost surely, 2^40311221263 is an apocalyptic number.

40311221263 is a deficient number, since it is larger than the sum of its proper divisors (1).

40311221263 is an equidigital number, since it uses as much as digits as its factorization.

40311221263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 40311221263 its reverse (36212211304), we get a palindrome (76523432567).

The spelling of 40311221263 in words is "forty billion, three hundred eleven million, two hundred twenty-one thousand, two hundred sixty-three".