20313022129 has 2 divisors, whose sum is σ = 20313022130. Its totient is φ = 20313022128.

The previous prime is 20313022123. The next prime is 20313022139. The reversal of 20313022129 is 92122031302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16072407729 + 4240614400 = 126777^2 + 65120^2 .

It is a cyclic number.

It is not a de Polignac number, because 20313022129 - 2⁵ = 20313022097 is a prime.

It is not a weakly prime, because it can be changed into another prime (20313022123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10156511064 + 10156511065.

It is an arithmetic number, because the mean of its divisors is an integer number (10156511065).

Almost surely, 2^20313022129 is an apocalyptic number.

It is an amenable number.

20313022129 is a deficient number, since it is larger than the sum of its proper divisors (1).

20313022129 is an equidigital number, since it uses as much as digits as its factorization.

20313022129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The spelling of 20313022129 in words is "twenty billion, three hundred thirteen million, twenty-two thousand, one hundred twenty-nine".