20434311101 has 2 divisors, whose sum is σ = 20434311102. Its totient is φ = 20434311100.

The previous prime is 20434311031. The next prime is 20434311109. The reversal of 20434311101 is 10111343402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15568551076 + 4865760025 = 124774^2 + 69755^2 .

It is a cyclic number.

It is not a de Polignac number, because 20434311101 - 2²⁶ = 20367202237 is a prime.

It is a super-2 number, since 2×20434311101² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20434311109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10217155550 + 10217155551.

It is an arithmetic number, because the mean of its divisors is an integer number (10217155551).

Almost surely, 2^20434311101 is an apocalyptic number.

It is an amenable number.

20434311101 is a deficient number, since it is larger than the sum of its proper divisors (1).

20434311101 is an equidigital number, since it uses as much as digits as its factorization.

20434311101 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 20.

Adding to 20434311101 its reverse (10111343402), we get a palindrome (30545654503).

The spelling of 20434311101 in words is "twenty billion, four hundred thirty-four million, three hundred eleven thousand, one hundred one".