20313026507 has 2 divisors, whose sum is σ = 20313026508. Its totient is φ = 20313026506.

The previous prime is 20313026473. The next prime is 20313026527. The reversal of 20313026507 is 70562031302.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20313026507 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20313026507.

It is not a weakly prime, because it can be changed into another prime (20313026527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10156513253 + 10156513254.

It is an arithmetic number, because the mean of its divisors is an integer number (10156513254).

Almost surely, 2^20313026507 is an apocalyptic number.

20313026507 is a deficient number, since it is larger than the sum of its proper divisors (1).

20313026507 is an equidigital number, since it uses as much as digits as its factorization.

20313026507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 29.

Adding to 20313026507 its reverse (70562031302), we get a palindrome (90875057809).

The spelling of 20313026507 in words is "twenty billion, three hundred thirteen million, twenty-six thousand, five hundred seven".