20223431311277 has 2 divisors, whose sum is σ = 20223431311278. Its totient is φ = 20223431311276.

The previous prime is 20223431311261. The next prime is 20223431311283. The reversal of 20223431311277 is 77211313432202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17610016352041 + 2613414959236 = 4196429^2 + 1616606^2 .

It is a cyclic number.

It is not a de Polignac number, because 20223431311277 - 2⁴ = 20223431311261 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20223431311277.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20223431311297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10111715655638 + 10111715655639.

It is an arithmetic number, because the mean of its divisors is an integer number (10111715655639).

Almost surely, 2^{20223431311277} is an apocalyptic number.

It is an amenable number.

20223431311277 is a deficient number, since it is larger than the sum of its proper divisors (1).

20223431311277 is an equidigital number, since it uses as much as digits as its factorization.

20223431311277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 38.

Adding to 20223431311277 its reverse (77211313432202), we get a palindrome (97434744743479).

The spelling of 20223431311277 in words is "twenty trillion, two hundred twenty-three billion, four hundred thirty-one million, three hundred eleven thousand, two hundred seventy-seven".