1223345287 has 2 divisors, whose sum is σ = 1223345288. Its totient is φ = 1223345286.

The previous prime is 1223345269. The next prime is 1223345303. The reversal of 1223345287 is 7825433221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1223345287 - 2⁷ = 1223345159 is a prime.

It is a super-2 number, since 2×1223345287² = 2993147382450224738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223345087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611672643 + 611672644.

It is an arithmetic number, because the mean of its divisors is an integer number (611672644).

Almost surely, 2^1223345287 is an apocalyptic number.

1223345287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223345287 is an equidigital number, since it uses as much as digits as its factorization.

1223345287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 37.

The square root of 1223345287 is about 34976.3532547348. The cubic root of 1223345287 is about 1069.5054887306.

The spelling of 1223345287 in words is "one billion, two hundred twenty-three million, three hundred forty-five thousand, two hundred eighty-seven".