20223032491 has 2 divisors, whose sum is σ = 20223032492. Its totient is φ = 20223032490.

The previous prime is 20223032471. The next prime is 20223032507. The reversal of 20223032491 is 19423032202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20223032491 - 2¹³ = 20223024299 is a prime.

It is not a weakly prime, because it can be changed into another prime (20223032471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10111516245 + 10111516246.

It is an arithmetic number, because the mean of its divisors is an integer number (10111516246).

Almost surely, 2^20223032491 is an apocalyptic number.

20223032491 is a deficient number, since it is larger than the sum of its proper divisors (1).

20223032491 is an equidigital number, since it uses as much as digits as its factorization.

20223032491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 20223032491 its reverse (19423032202), we get a palindrome (39646064693).

The spelling of 20223032491 in words is "twenty billion, two hundred twenty-three million, thirty-two thousand, four hundred ninety-one".