20030223091 has 2 divisors, whose sum is σ = 20030223092. Its totient is φ = 20030223090.

The previous prime is 20030223079. The next prime is 20030223131. The reversal of 20030223091 is 19032203002.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20030223091 is a prime.

It is not a weakly prime, because it can be changed into another prime (20030223011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10015111545 + 10015111546.

It is an arithmetic number, because the mean of its divisors is an integer number (10015111546).

Almost surely, 2^20030223091 is an apocalyptic number.

20030223091 is a deficient number, since it is larger than the sum of its proper divisors (1).

20030223091 is an equidigital number, since it uses as much as digits as its factorization.

20030223091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 20030223091 its reverse (19032203002), we get a palindrome (39062426093).

The spelling of 20030223091 in words is "twenty billion, thirty million, two hundred twenty-three thousand, ninety-one".