1223230311973 has 2 divisors, whose sum is σ = 1223230311974. Its totient is φ = 1223230311972.

The previous prime is 1223230311967. The next prime is 1223230312039. The reversal of 1223230311973 is 3791130323221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1183532937409 + 39697374564 = 1087903^2 + 199242^2 .

It is an emirp because it is prime and its reverse (3791130323221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1223230311973 is a prime.

It is a super-2 number, since 2×1223230311973² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223230311473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611615155986 + 611615155987.

It is an arithmetic number, because the mean of its divisors is an integer number (611615155987).

Almost surely, 2^{1223230311973} is an apocalyptic number.

It is an amenable number.

1223230311973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223230311973 is an equidigital number, since it uses as much as digits as its factorization.

1223230311973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 37.

The spelling of 1223230311973 in words is "one trillion, two hundred twenty-three billion, two hundred thirty million, three hundred eleven thousand, nine hundred seventy-three".