20311011283 has 2 divisors, whose sum is σ = 20311011284. Its totient is φ = 20311011282.

The previous prime is 20311011269. The next prime is 20311011317. The reversal of 20311011283 is 38211011302.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20311011283 is a prime.

It is not a weakly prime, because it can be changed into another prime (20311011223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10155505641 + 10155505642.

It is an arithmetic number, because the mean of its divisors is an integer number (10155505642).

Almost surely, 2^20311011283 is an apocalyptic number.

20311011283 is a deficient number, since it is larger than the sum of its proper divisors (1).

20311011283 is an equidigital number, since it uses as much as digits as its factorization.

20311011283 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 20311011283 its reverse (38211011302), we get a palindrome (58522022585).

The spelling of 20311011283 in words is "twenty billion, three hundred eleven million, eleven thousand, two hundred eighty-three".