20313232229 has 2 divisors, whose sum is σ = 20313232230. Its totient is φ = 20313232228.

The previous prime is 20313232223. The next prime is 20313232271. The reversal of 20313232229 is 92223231302.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19537609729 + 775622500 = 139777^2 + 27850^2 .

It is a cyclic number.

It is not a de Polignac number, because 20313232229 - 2⁸ = 20313231973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20313232223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10156616114 + 10156616115.

It is an arithmetic number, because the mean of its divisors is an integer number (10156616115).

Almost surely, 2^20313232229 is an apocalyptic number.

It is an amenable number.

20313232229 is a deficient number, since it is larger than the sum of its proper divisors (1).

20313232229 is an equidigital number, since it uses as much as digits as its factorization.

20313232229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 29.

The spelling of 20313232229 in words is "twenty billion, three hundred thirteen million, two hundred thirty-two thousand, two hundred twenty-nine".