1223423011 has 2 divisors, whose sum is σ = 1223423012. Its totient is φ = 1223423010.

The previous prime is 1223422973. The next prime is 1223423021. The reversal of 1223423011 is 1103243221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1223423011 - 2⁷ = 1223422883 is a prime.

It is a super-2 number, since 2×1223423011² = 2993527727688612242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1223423011.

It is not a weakly prime, because it can be changed into another prime (1223423021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611711505 + 611711506.

It is an arithmetic number, because the mean of its divisors is an integer number (611711506).

Almost surely, 2^1223423011 is an apocalyptic number.

1223423011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223423011 is an equidigital number, since it uses as much as digits as its factorization.

1223423011 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 19.

The square root of 1223423011 is about 34977.4643306229. The cubic root of 1223423011 is about 1069.5281382325.

Adding to 1223423011 its reverse (1103243221), we get a palindrome (2326666232).

It can be divided in two parts, 12234 and 23011, that added together give a triangular number (35245 = T₂₆₅).

The spelling of 1223423011 in words is "one billion, two hundred twenty-three million, four hundred twenty-three thousand, eleven".