223918023397 has 2 divisors, whose sum is σ = 223918023398. Its totient is φ = 223918023396.

The previous prime is 223918023377. The next prime is 223918023403. The reversal of 223918023397 is 793320819322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220067944996 + 3850078401 = 469114^2 + 62049^2 .

It is a cyclic number.

It is not a de Polignac number, because 223918023397 - 2¹⁹ = 223917499109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 223918023397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223918023377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111959011698 + 111959011699.

It is an arithmetic number, because the mean of its divisors is an integer number (111959011699).

Almost surely, 2^223918023397 is an apocalyptic number.

It is an amenable number.

223918023397 is a deficient number, since it is larger than the sum of its proper divisors (1).

223918023397 is an equidigital number, since it uses as much as digits as its factorization.

223918023397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 49.

The spelling of 223918023397 in words is "two hundred twenty-three billion, nine hundred eighteen million, twenty-three thousand, three hundred ninety-seven".