20323143469 has 2 divisors, whose sum is σ = 20323143470. Its totient is φ = 20323143468.

The previous prime is 20323143431. The next prime is 20323143497. The reversal of 20323143469 is 96434132302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17168860900 + 3154282569 = 131030^2 + 56163^2 .

It is a cyclic number.

It is not a de Polignac number, because 20323143469 - 2¹⁷ = 20323012397 is a prime.

It is a super-2 number, since 2×20323143469² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20323143569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10161571734 + 10161571735.

It is an arithmetic number, because the mean of its divisors is an integer number (10161571735).

Almost surely, 2^20323143469 is an apocalyptic number.

It is an amenable number.

20323143469 is a deficient number, since it is larger than the sum of its proper divisors (1).

20323143469 is an equidigital number, since it uses as much as digits as its factorization.

20323143469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 37.

The spelling of 20323143469 in words is "twenty billion, three hundred twenty-three million, one hundred forty-three thousand, four hundred sixty-nine".