1223313019 has 2 divisors, whose sum is σ = 1223313020. Its totient is φ = 1223313018.

The previous prime is 1223312999. The next prime is 1223313053. The reversal of 1223313019 is 9103133221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1223313019 - 2⁹ = 1223312507 is a prime.

It is a super-2 number, since 2×1223313019² = 2992989484909788722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1223312984 and 1223313002.

It is not a weakly prime, because it can be changed into another prime (1223313089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611656509 + 611656510.

It is an arithmetic number, because the mean of its divisors is an integer number (611656510).

Almost surely, 2^1223313019 is an apocalyptic number.

1223313019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223313019 is an equidigital number, since it uses as much as digits as its factorization.

1223313019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 1223313019 is about 34975.8919686118. The cubic root of 1223313019 is about 1069.4960852512.

It can be divided in two parts, 12233 and 13019, that added together give a palindrome (25252).

The spelling of 1223313019 in words is "one billion, two hundred twenty-three million, three hundred thirteen thousand, nineteen".