1223131311019 has 2 divisors, whose sum is σ = 1223131311020. Its totient is φ = 1223131311018.

The previous prime is 1223131310993. The next prime is 1223131311023. The reversal of 1223131311019 is 9101131313221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1223131311019 - 2¹⁵ = 1223131278251 is a prime.

It is a super-2 number, since 2×1223131311019² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1223131311319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611565655509 + 611565655510.

It is an arithmetic number, because the mean of its divisors is an integer number (611565655510).

Almost surely, 2^{1223131311019} is an apocalyptic number.

1223131311019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223131311019 is an equidigital number, since it uses as much as digits as its factorization.

1223131311019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 28.

The spelling of 1223131311019 in words is "one trillion, two hundred twenty-three billion, one hundred thirty-one million, three hundred eleven thousand, nineteen".